Raypak 0090B 0135B Users Manual 2100.50(residential I O)

0090B 0135B to the manual 5fc10e28-a3c7-49e3-918b-e5bc4b3aa934

2015-02-02

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Catalog No.: 2100.50P
Effective: 11-01-99
Replaces: 6-01-99

OPERATING AND
INSTALLATION
INSTRUCTIONS
Models
0030B, 0042B, 0066B, 0090B
0135B, 0180B
Type H
RESIDENTIAL BOILERS

FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and liquids or other combustible materials
in the vicinity of this or any other appliance. To do so may result in an explosion or fire.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury or loss of life. Refer to the user's information manual provided
with this boiler. Installation and service must be performed by a qualified installer, service agency
or the gas supplier.
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS
*Do not try to light any appliance.
*Do not touch any electrical switch; do not use any phone in your building.
*Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
*If you cannot reach your gas supplier, call the fire department.

THIS MANUAL SHOULD BE MAINTAINED IN LEGIBLE CONDITION
AND KEPT ADJACENT TO THE BOILER OR KEPT IN A SAFE PLACE
FOR FUTURE REFERENCE.

P/N 240488

Contents

1. RECEIVING EQUIPMENT

2. GENERAL SPECIFICATIONS AND DIMENSIONS

4
4
4
4
4
5
7
10
10
14

3. INSTALLATION PROCEDURES
- Code Requirements
- Mounting Base
- Clearance Requirements
- Combustion/Ventilation Air
- Venting Connections
- Vent Damper Installation
- Gas Supply Connections
- Water Connections & System Piping
- Electrical Wiring

22
22
22
23
28
28
29

4. SERVICING PROCECURES
- General Locations of Controls
- Sequence of Operation
- Start Up Procedures
- Safe Shutdown Test
- Normal Inspection Procedures
- Repair Section

31
33

5. TROUBLE SHOOTING GUIDE
- Adjustments/Replacements of Components

6. REPLACEMENT PARTS LIST

These instructions are provided to assure the proper
installation and operation of Raypak boilers. Should
questions arise regarding the specifications, installation, operation or servicing of these boilers, we suggest
that the local Sales representative or the factory be
consulted.

1. RECEIVING EQUIPMENT

Follow the installation instructions furnished with the
vent damper package. The plug-in connector can also
be used with power venters. Refer to the specific
installation instructions supplied by the power vent
manufacturer.

On receipt of your equipment it is suggested that
you visually check for external damage to the carton. If
the carton is damaged, it is suggested that a note be
made on the Bill of Lading when signing for equipment.
Remove the boiler from the carton and if it is damaged
report the damage to the carrier immediately. Be
sure that you receive the number of packages indicated
on the Bill of Lading. Claims for shortages and
damages must be filed with carrier by consignee.
Purchased parts are subject to replacement only
under the manufacturer's warranty. Debits for defective
replacement parts will not be accepted and defective
parts will be replaced in kind only per our standard
warranties.
When ordering parts, you must specify Model and
Serial Number of boiler. When ordering under warranty
conditions, you must also specify date of installation.
Raypak recommends that this manual be reviewed thoroughly before installing your Raypak
Boiler. If there are any questions which this manual
does not answer, please contact your local Raypak
representative.

SPECIFICATIONS AND DIMENSIONS
HEATING
NET
INPUT CAPACITY I=B=R
MODEL MBH
MBH
RATING
H-0030 30
25
22
H-0042 42
35
30
H-0066 66
54
47
H-0090 90
74
64
H-0135 135
109
95
H-0180 180
148
129

PIPING
CONNECTIONS
WATER GAS
NPT.
NPT.
1"
1/2"
1"
1/2"
1"
1/2"
1"
1/2"
1 1/4"
1/2"
1 1/4"
1/2"

B
K

A
11"
11"
11"
11"
18"
18"

B
5 3/4
5 3/4
5 3/4
5 3/4
6 1/4
6 1/4

C
5 1/2
5 1/2
5 3/4
5 3/4
6 1/4
8.0

AUTOMATIC
VENT DAMPER
(FIELD INSTALLED)
INLET

31/8

117/8

OUTLET

2. GENERAL SPECIFICATIONS

6
MIN

The Raypak hydronic boilers are design certified by
the American Gas Association, and tested under the
requirements of the American National Standard, ANSI
Z21.13. Each boiler has been constructed and pressure
tested in accordance with the requirements of Section
IV of the American Society of Mechanical Engineers
Code, and factory fire tested.
The boilers are designed for indoor installation with
a built-in drafthood, and a built-in sub-base for combustible flooring. Models are available with standing pilot,
or with intermittent ignition device (I.I.D.). The boilers
are equipped with the following components: water
circulation pump, pressure relief valve, temperature/
pressure gauge, adjustable high limit switch, drain
valve, fast response temperature sensor, 40 VA transformer, pump relay, vent thermal switch, flame roll-out
switch, and redundant combination gas valve for use
with either natural or propane gases. Two-staged gas
valve (50% firing on 1st stage) is standard on models
H-0090, H-0135 and H-0180.
The automatic ignition models and some standing
pilot models are provided with a plug-in connector that
is compatible with the Honeywell D80D vent damper.
Similar type vent dampers made by other manufacturers, and design certified by a nationally-recognized
testing Agency, under the ANSI Z21.66 standards, may
also be used.

A
1

4 /2
C

3/4 NPT PIPE
TO DRAIN

1
33 /4
1

THERMOSTAT CONN
(ELECTRICAL CONN
ON OTHER SIDE)

3 /4
GAS
CONN

18
1

12 /2
5

1
22 /8

1
26 /2

Fig. #8978.1

K
VENT
DIA.
4"
4"
5"
5"
6"
7"

3. INSTALLATION PROCEDURES
CODE REQUIREMENTS
Installation must be in accordance with local
codes, or, in the absence of local codes, with the latest
editions of the National Fuel Gas Code, ANSI Z223.1,
and the National Electrical Code, ANSI/NFPA 70. In
Canada installations must conform with the current
CAN/CGA B149.1 or .2 and the Canadian Electrical
Code Part 1 CSA C22.2 No.1. Where required by the
authority having jurisdiction, the installation must conform to American Society of Mechanical Engineers
Safety Code for Controls and Safety Devices for Automatically Fired Boilers, No. CSD-1.

CLEARANCE REQUIREMENTS
1) Minimum Clearances From Combustible Materials
Model Floor Front Back Right Left
No.
0030
0042 Comb. 4"
6"
6"
6"
0066
0090
0135 Comb. Alcove 6"
6"
6"
0180

Top Flue
Vent
16"

16"

2) A front clearance of at least 24" is recommended for
adequate service of burner-tray and controls.

MOUNTING BASE
Boiler should be mounted on a level surface. Each
boiler is designed with a built-in sub-base approved for
mounting the boiler on combustible flooring. Boiler
must NOT be installed on carpet flooring.

3) Except for carpeted flooring, boilers are certified for
installation on combustible floors.
4) For un-insulated hot water pipes, maintain a 2"
clearance, or consult local authority having jurisdiction.
COMBUSTION/VENTILATION AIR
WARNING: Air supply to the boiler room must not be
affected by mechanical exhaust vents located in other
parts of the house, such as kitchen or bathroom fans,
or attic blowers. Mechanical exhaust vents may create
a negative pressure condition in the boiler room that
can become a hazard of asphyxiation, explosion or fire.
CAUTION: Combustion air must not be contaminated
by corrosive chemical fumes which can damage the
boiler. Measures must be taken to prevent the entry of
corrosive chemical fumes to the combustion and ventilation air supply. Such chemicals include, but are not
limited to, chlorinated and/or fluorinated hydrocarbons
such as found in refrigerants, aerosol propellants, drycleaning fluids, degreasers, and paint removers. Other
harmful elements may come from bleaches, air fresheners, or mastics. Vapors from these types of products
can form corrosive acid compounds when burned in a
gas flame. The resulting acid condensate can damage
or substantially reduce the life of the heater. It may be
necessary to provide outside air directly to the heater in
order to avoid this problem.

CARPET

Fig.# 8196.0p

NOTE: The boiler should be located in an area where
water leakage will not result in damage to the area
adjacent to the appliance or to the structure. When
such locations cannot be avoided, it is recommended
that a suitable drain pan, adequately drained, be installed under the appliance. The pan must not restrict
air flow.

1) The boiler must be provided with adequate supply of
air for proper combustion and ventilation in accordance with Sec. 5.3, of the latest edition of the
National Fuel Gas Code, ANSI Z223.1, or applicable provisions of the local building codes.

In addition, the boiler shall be installed such that
the gas ignition system components are protected from
water (dripping, spraying, rain, etc.) during appliance
operation and service (circulator replacement, control
replacement, etc.)
4

2) When the boiler is installed in a confined space
such as a utility room or closet (Models 0030,0042
and 0066 only), where all air is supplied from inside
the building, the boiler room must be provided with
two openings, each one having a minimum net free
area, in square inches as follows:
Model
0030, 0042 & 0066

Location of the openings is the same as in the
previous case - that is, within 12 inches of the top, and
within 12 inches of the bottom of the enclosure. If
horizontal ducts are used, the area must be doubled and
the duct area shall not be less than the area of the
openings they connect, and in no case shall the smallest dimension be less than 3 inches.

Sq. In. of Free Area
100

VENTING CONNECTIONS
These boilers have built-in drafthoods. Vent piping
the same size or larger than the draft hood outlet is
recommended; however, when the total vent height
(drafthood outlet to vent terminal) is at least ten (10)
feet, the vent pipe size may be reduced by one size only
as specified in Part 11, Note 2 and in Appendix G of the
latest edition of the National Fuel Gas Code, ANSI Z
223.1. As much as possible avoid horizontal runs of
vent pipe and too many elbows. If installation requires
horizontal runs, the vent pipe must have a minimum of
1/4 inch per foot rise and should be supported at not less
than five foot intervals. Maximum vent connector horizontal length shall be 1-1/2 feet (18 inches) for each inch
of connector diameter as follows.

One opening shall be within 12 inches of the top,
and the other opening within 12 inches of the floor. If
additional gas appliances are installed in the same
space, the total input of all gas appliances installed in
the same space, must be considered in the calculation.
Refer to Sec. 5.3.5 of the latest edition of the National
Fuel Gas Code for additional requirements.

12"

Boiler Size

30 & 42
66 & 90
135
180

12"

Fig. #8198.0

If the boiler room is located against an outside wall
and air openings can communicate directly with the
outdoors, the two openings on the outside wall must
each have a net free area, in square inches as
follows:
Model
0030 & 0042
0066
0090
0135
0180

4"
5"
6"
7"

Max Horizontal
Length - FT
6
7.5
9
10.5

Gas Vents supported only by the flashing and
extending above the roof more than five feet should be
securely guyed or braced to withstand snow and wind
loads. We recommend use of insulated vent pipe
spacer through the roofs and walls.
For protections against rain or blockage by snow,
the vent pipe must terminate with a listed vent cap which
complies with the local codes or, in the absence of such
codes, to the latest edition of the National Fuel Gas
Code, ANSI Z 223.1.
The discharge opening must be a minimum of two
feet vertically from the roof surface and at least two (2)
feet higher than any part of the building within ten (10)
feet. Vent stack shall be at least five (5) feet in vertical
height above the drafthood outlet. The vent cap location
shall have a minimum clearance of four (4) feet horizontally from, and in no case above or below, unless a 4-foot
horizontal distance is maintained, from electric meters,
gas meters regulators and relief equipment.

NOTE: If louvers, grills or screens are used on the
openings, obtain the net free area from their supplier or
manufacturer. If the design free area of a louver is not
known nor available, it shall be assumed that wood
louvers will have 20-25 percent free area and metal
louvers will have 60-75 percent free area as shown in
Sec. 5.3.5 National Fuel Gas Code.
3)

Vent Connector
Diameter

Sq. In. Of Free Area
12
18
24
35
45
5

10’

The weight of the vent stack or chimney must not
rest on boiler draft hood. Support must be provided in
compliance with applicable codes. The boiler top and
draft hood must be readily removable for maintenance
and inspection. Vent pipe should be adequately supported to maintain proper clearances from combustible
construction.
Type "B" double wall (or equivalent vent pipe is
recommended. However single wall metal vent pipe
may be used as specified in the latest edition of the
National Flue Gas Code ANSI Z 223.1.

Listed Cap

OR LESS

VENT CAP
2’ MIN.
2’ MIN.

5’ MIN.

Lowest Discharge
Opening

Listed Gas Vent
X

Fig.# 8191.0

WARNING: These boilers must not be connected into
any portion of mechanical draft systems operating
under positive pressure. To do so may cause the flue
products to be discharged into the living space causing
serious health injury.

Roof Pitch is X/12

H (Min.)-Minimum Height from
Roof to Lowest
Discharge Opening

Roof Pitch
Flat to 6/12
6/12 to 7/12
Over 7/12 to 8/12
Over 8/12 to 9/12
Over 9/12 to 10/12
Over 10/12 to 11/12
Over 11/12 to 12/12
Over 12/12 to 14/12
Over 14/12 to 16/12
Over 16/12 to 18/12
Over 18/12 to 20/12
Over 20/12 to 21/12

For connections to gas vents or chimneys, vent
installations shall be in accordance with Part 7, Venting
of Equipment, of the National Fuel Gas Code, ANSI
Z223.1, or applicable provisions of the local building
codes.

H (Min.) Ft.
1.0
1.25
1.5
2.0
2.5
3.25
4.0
5.0
6.0
7.0
7.5
8.0

COMMON VENTS
Manifolds that connect more than one
boiler to a common chimney must be
sized to handle the combined load.
Consult available guides for proper
sizing of the manifold and the chimney.
At no time should the area be less than
the area of the largest outlet.

Fig. #9001

At the time of removal of an existing boiler, the
following steps shall be followed with each appliance
remaining connected to the common venting system
placed in operation, while the other appliances remaining connected to the common venting system are not
in operation.

VENT DAMPER INSTALLATION
LOCATION
The vent damper supplied with each boiler must be
located in the vent so that it serves only the appliance
for which it is intended.
If improperly installed, a hazardous condition,
such as an explosion or carbon monoxide poisoning, could result. Make certain that it is mounted in an
accessible location at least 6 in. (152.4 mm) from any
combustible material or the heat exchanger and that
the position indicator is in a visible location.
The vent damper must be installed at the appliance draft hood, and without modification of the draft
hood.
To connect the vent damper wiring to the boiler wiring,
remove the jumper from the circuit plug. (See wiring
diagram) Connect the damper circuit plug to the boiler
circuit plug.

(a) Seal any unused openings in the common venting
system.
(b) Visually inspect the venting system for proper size
and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion and
other deficiencies which could cause an unsafe
condition.
(c) Insofar as is practical, close all building doors and
windows and all doors between the space in which
the appliances remaining connected to the common venting system are located and other spaces
of the building. Turn on clothes dryers and any
appliance not connected to the common venting
system. Turn on any exhaust fans, such as range
hoods and bathroom exhausts, so they will operate
at maximum speed. Do not operate a summer
exhaust fan. Close fireplace dampers.
(d) Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust thermostat
so appliance will operate continuously.
e) Test for spillage at the draft hood relief opening
after 5 minutes of main burner operation. Use the
flame of a match or candle, or smoke from a
cigarette, cigar or pipe to visually check spillage.
(f) After it has been determined that each appliance
remaining connected to the common venting system properly vents when tested as outlined above,
return doors, windows, exhaust fans, fireplace
dampers and any other gas burning appliance to
their previous conditions of use.
(g) Any improper operation of the common venting
system should be corrected so the installation
conforms with the latest edition of the National Fuel
Gas Code, ANSI Z 223.1. When resizing any
portion of the common venting system, the common venting system should be resized to approach the minimum size as determined using the
appropriate tables in Part 11 and in Appendix G
of the National Fuel Gas Code, ANSI Z 223.1 and
CAN/CGA - B149.1 - M91.

Fig. #8642

MOUNTING
On vertical vents, the vent damper may be mounted with the actuator in any position. On horizontal vents,
do not mount the actuator either directly above or directly below the vent pipe; mount the vent damper actuator
to the side of the vent.
The vent damper is set up for a continuous pilot system. If the vent damper is installed on an Intermittent Pilot
or Hot Surface Ignition equipped system, the energy savings of the vent damper can be improved by plugging the
hole in the vent damper blade using the knockout plug, Part No. 105612R, provided in the parts envelope.
Hole in Vent Damper Blade
Closed Position

Fig. #8994

DO NOT plug the hole if installing the vent damper on a continuous pilot system as this will create a
hazardous condition.
HORIZONTAL INSTALLATION
FLOW >

NO
YES

TO BOILER

VENT DAMPER

YES

TO CHIMNEY

1K1

VERTICAL
INSTALLATION

INSTALL VENT
TO CHIMNEY

D80
MOTOR

DAMPER WITH
ACTUATOR TO SIDES

N.C.

OF VENT ONLY. DO

BELOW VENT.
ACTUATOR MAY BE

HOOD

POSITION ON VERTICAL
PIPE.

Fig. #8183.0

INSTALLING THE VENT DAMPER IN HORIZONTAL
& VERTICAL VENTS.

ORANGE

DRAFT

C.
1K3

INSTALLED IN ANY

YELLOW

AT BOILER

1K2
N.O.

BLACK

DAMPER

END
SWITCH

NOT MOUNT ABOVE OR

BLUE

VENT

CABLE
Fig. #152323

D80D GENERAL WIRING DIAGRAM
INSTALL THE VENT DAMPER TO SERVICE ONLY THE SINGLE APPLIANCE FOR WHICH IT IS INTENDED.
IF IMPROPERLY INSTALLED, A HAZARDOUS CONDITION, SUCH AS AN EXPLOSION OR CARBON
MONOXIDE POISONING, COULD RESULT.

VENT DAMPER
NORMAL OPERATION SUMMARY
For safe, efficient operation, the vent damper and all flue product carrying areas of the appliance must
be checked annually, with particular attention given to deterioration from corrosion or other sources.
Check vent damper operation as follows:
1. When the boiler is off, check that the vent damper position indicator points to the closed position, below.
DAMPER

DAMPER

POSITION

INDICATOR

NOTE: To place vent damper in
the open position to allow burner
operation do the following:
Turn the power off, turn the damper
blade to fully open position (arrow
facing same direction as vent
pipe). Turn power on.

INDICATOR

Fig. # 8181.0

DAMPER OPEN

DAMPER CLOSED

FIG. 4- VENT DAMPER POSITION INDICATOR SHOWING OPEN & CLOSED POSITIONS.
2. Turn the thermostat or controller up to call for heat and check that the vent damper indicator points to the
open position, below.
3. Turn the thermostat or controller down again and check that the vent damper position indicator returns to
the closed position.
THE VENT DAMPER MUST BE INSPECTED AT LEAST ONCE A YEAR BY A TRAINED, EXPERIENCED
SERVICE TECHNICIAN. THE NAME OF THE PERSON WHO ORIGINALLY INSTALLED YOUR VENT
DAMPER IS SHOWN ON THE INSTALLATION LABEL. DAMPER MUST BE IN OPEN POSITION WHEN
BOILER MAIN BURNERS ARE OPERATING.
FLAIR DAMPER
SYSTEM SCHEMATIC

LEGEND
M - Damper motor
R - Relay
ES - End Switch
SS1 - N/C Safety switch
SS2 - N/O Safety switch
contacts
TR - Transformer 120/24V
HL - High limit
GV - 24V gas Valve*
TH - Thermostat, heating,
low voltage
J - Jumper
* Note: Circuit shown with
damper in closed
position, no call
for heat.

SS2 ES

SS 1
R1
JUMPER

M
1

LADDER DIAGRAM

TH
2

GV
3

ES
SS

SC
R1

HL
GV
24 VAC

TH
TR

120 VAC
60Hz L
L
1
2

Fig. #9002

Fig. #9003

GAS SUPPLY CONNECTIONS
The inlet gas connection of the boiler gas valve is
1/2". Provide an adequate gas piping supply line no
smaller than 1/2", according to the chart below:

The gas valve is provided with pressure taps to
measure gas pressure upstream of the gas valve and
downstream which is the same as the manifold pressure.

Maximum Equivalent Pipe Length (Feet)

WATER CONNECTIONS & SYSTEM PIPING
The pipe size for water connections is shown on
page 3. Typical piping systems are shown on pages 11
to 13.
The boiler is supplied as standard with a circulator
and a built -in by-pass to insure the required minimum
water flow in the boiler. The by-pass on models H-0135
and H-0180 is provided with an adjustable valve that is
factory set in the full open position. The handle is
shipped loose. The full open position is appropriate for
most systems, and insures adequate flow through the
boiler. If system flow is inadequate, (indicated by
excessive temperature drop through the system) the bypass valve can be throttled slightly. Care must be taken
against over throttling which may lead to inadequate
flow through the boiler and boiler harmonics (a humming
sound from the heat exchanger). If adequate system
flow cannot be obtained without causing harmonics, an
additional pump is required. The factory mounted
circulator will provide adequate water flow for systems
designed at a 20°F temperature drop, and system
pressure drop or head not exceeding that is shown
below.

1/2" Pipe 3/4" Pipe
1" Pipe 1 1/4" Pipe
MODEL NAT PRO NAT PRO NAT PRO NAT PRO
0030 &
0042 125 350 500
0066
60 160 175 460
0090
30
80 125 325 400
0135
15
40
60 155 200 500
0180
20
35
90 115 300 425
-

Gas piping must have a sediment trap ahead of the
boiler gas controls, and a manual shutoff valve located
outside the jacket. All gas piping should be tested after
installation in accordance with local codes.
Manual
Valve

Union

Sediment Trap

Gas Valve
Fig. # 8192.0

CAUTION: The boiler and its manual shut off valve must
be disconnected from the gas supply during any pressure testing of that system at test pressures in excess
of 1/2 psig (3.45 KPA). Dissipate test pressure in the
gas supply line before reconnecting the boiler and its
manual shut off valve to gas supply line. FAILURE TO
FOLLOW THIS PROCEDURE MAY DAMAGE THE
GAS VALVE. OVER PRESSURED GAS VALVES ARE
NOT COVERED BY WARRANTY. The boiler and its
gas connections shall be leak tested before placing the
appliance in operation. Use soapy water for leak test.
DO NOT use open flame.

Models
H-0030
H-0042
H-0066
H-0090
H-0135
H-0180

When the total system head exceeds the available
head pressures, a primary/secondary pumping system
is recommended.
The minimum boiler operating temperature
should be 105°F. When operating at low temperature applications, ÐT (temperature rise) must be
20°F or less.
Propylene glycol solution is commonly used in the
heating system when freeze protection is required. This
will affect the system design and pump performance. As
a "rule of thumb", 50% solution of propylene glycol will
require the system flow (GPM) to increase by 14%, and
the system head (Ft/Wtr) by 23% in order to maintain the
same heat transfer load.

NOTE: Do not use teflon tape on gas line pipe thread.
A flexible sealant suitable for use with Natural and
Propane gases is recommended.
GAS PRESSURE-SPECIFICATIONS
Inches
W.C.
Min.
Max.
Natural
7.0
14.0
Propane
12.0
14.0

System
Maximum
Flow System Head
(GPM)
(Ft/Wtr)
2.5
9.0
3.5
8.0
5.3
8.5
7.3
6.5
11.0
10.0
14.6
7.0

Regulator
Setting
3.5
11.0

Systems with multiple zones may require an additional circulator. Consult manufacturers data for valve
pressure drops. When an indirect water heating system is used, it is recommended that a separate circulator be
installed to meet the required flow and pressure drop conditions of the indirect water heater.
We recommend that the make up water from the cold water line have a check valve, gate valve, and feedwater
regulator set at 12 psig. Install unions and gate or ball valves at inlet and outlet connections at the boiler to facilitate
servicing.
The pressure relief valve is mounted on the boiler and must be piped to a drain. We recommend that all high
points be vented and that purge valves be installed. A boiler installed above radiation level must be provided with
a low water cutoff device. See page 21 for wiring hook-up. The boiler, when used in connection with a refrigeration
system, must be installed so the chilled medium is piped in parallel with the boiler with appropriate valves to prevent
the chilled medium from entering the boiler.
The boiler piping system of a hot water heating boiler connected to heating coils located in air handling units
where they may be exposed to refrigerated air circulation must be equipped with flow control valves or other
automatic means to prevent gravity circulation of the boiler water during the cooling cycle.
A diaphragm expansion tank should be installed in the return line. A typical 8" diameter expansion tank can
be used on the models H-0030, H-0042, and H-0066 and an 11" diameter expansion tank can be used on the
model H-0090, H-0135 and H-1080. Consult tank manufacturer for correct sizing.
TYPICAL PIPING

AIR
VENT

AIR
SCOOP

FEED
VALVE

DIAPHRAGM
EXPANSION TANK

PIPE PRESSURE
RELIEF VALVE
TO DRAIN

COLD
WATER
INLET

HEATING UNITS

Fig.# 8997.1

SINGLE ZONE PIPING
11

AIR
VENT

AIR
SCOOP

FEED
VALVE

DIAPHRAGM
EXPANSION
TANK
PIPE PRESSURE
RELIEF VALVE
TO DRAIN

ZONE
VALVES

COLD
WATER
INLET

HOT WATER
SUPPLY

HEATING UNITS

CIRCULATOR

COLD
WATER
SUPPLY

Fig.# 8998.1

ZONE HEATING WITH INDIRECT DOMESTIC
HOT WATER SUPPLY

AIR
VENT

12" MAX.

AIR
SCOOP

DIAPHRAGM

FEED EXPANSION
VALVE TANK
PIPE PRESSURE
RELIEF VALVE
TO DRAIN

CIRCULATORS

COLD
WATER
INLET
HEATING UNITS

MULTIPLE ZONES WITH CIRCULATORS

Fig. #8999.1

AIR
VENT

AIR
SCOOP

FEED
VALVE

DIAPHRAGM
EXPANSION
TANK
PIPE PRESSURE
RELIEF VALVE
TO DRAIN

COLD
WATER
INLET

ZONE
VALVES

HEATING UNITS

MULTIPLE ZONES WITH ZONE VALVES

Fig. #9000.1

ELECTRICAL WIRING
The electrical power supply requirement for these
boilers is 115 volts, 60 Hz. Field wiring connections and
electrical grounding must comply with the local codes,
or in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70-1987. Provide a separate fused circuit from the main electrical panel to the
boiler, and a disconnecting means within sight of the
boiler.
Remove the control box cover and make the power
supply connections in the field wiring compartment.
(See general location of controls drawing on page 18).
The pump is supplied and factory wired to operate with
the boiler. The "TH" wire leads are for the room
thermostat or zone valve connections.

The room thermostat should be installed in accordance
with the manufacturer's instructions. The thermostat
heat anticipator should be set at 1.0 ampere (automatic
ignition) and 0.60 ampere (standing pilot) for single
zone installations. For multi-zone applications, the heat
anticipator setting should be based on the ampere load
in the thermostat circuit.
NOTE: If it is necessary to replace any of the original
wiring, it must be replaced with 105°C wire or its
equivalent, except 150° black wire must be replaced
with 150°C wire or its equivalent. See wiring diagram
key for 150°C wire indication.

WIRING DIAGRAM KEY

Fig.# 8096.2

WIRING DIAGRAM: STANDING PILOT 24 V 2 STAGE
MODELS 90, 135 & 180

Fig. # 2223e

See page 14 wiring diagram key information.

WIRING DIAGRAM:INTERMITTENT IGNITION DEVICE (IID)
MODELS 30, 42, & 66

*REFER TO INSTALLATION/OPERATING INSTRUCTIONS
AND WIRING DIAGRAM SUPPLIED WITH VENT DAMPER.
VENT DAMPER OPTIONAL ON CANADIAN MODELS.

See page 14 wiring diagram key information.
16

WIRING DIAGRAM: INTERMITTENT IGNITION DEVICE (IID)
MODELS 90, 135 & 180

*REFER TO INSTALLATION/OPERATING INSTRUCTIONS
AND WIRING DIAGRAM SUPPLIED WITH VENT DAMPER.
VENT DAMPER OPTIONAL ON CANADIAN MODELS.
Fig. #2358

See page 14 wiring diagram key information.
17

WIRING DIAGRAM: Single Zone Taco Valve

Fig. # 2228e

WIRING DIAGRAM: Dual Zone Taco Valve

Fig. # 2229e

NOTE: Maximum three (3) zone valves per one (1) 40 VA transformer.
WIRING DIAGRAM: Dual Zone Honeywell Valve

Fig. # 2230e

NOTE: Maximum five (5) zone valves per one (1) 40 VA Transformer.
18

WIRING DIAGRAM: System with (3) Zone Pumps

Fig. #2232e

NOTE: Check VA rating of each relay coil. Total load must not exceed VA rating of transformer.
WIRING DIAGRAM: Power Vent System w/ Zone Valve
Taco Zone Valve

Fig. #2233e

Honeywell Zone Valve

Fig. #2234e

WIRING DIAGRAM: Primary/Secondary Pumping System
Honeywell Zone Valve

Fig. #2223.2e

WIRING DIAGRAM: Standing Pilot With Low Water Cut Off Device

Fig. # 2223.1e

Note: Low water cut off (LWCO) and system switch supplied by others.
WIRING DIAGRAM: IID Units With Low Water Cut Off Device

Fig. # 2357E

Note: Low water cut off (LWCO) and system switch supplied by others.
21

4. SERVICING PROCEDURES
GENERAL LOCATION OF CONTROLS

CIRCULATOR
VENT SENSOR

CONTROL BOX COMPONENT
LOCATIONS MODELS 135 & 180
2-Staged Controller

BYPASS VALVE
(MODELS 135 & 180 ONLY)

BYPASS LINE
TEMPERATURE
AND PRESSURE GAUGE

Relay

2-STAGED CONTROLLER
(MODEL 90 ONLY)

PRESSURE
RELIEF VALVE
RELAY
ADJUSTABLE
HIGH LIMIT
FIELD WIRING
COMPARTMENT

Fast
Ignition Module
Response
Temperature (Auto Ignition Only)
Sensor
Fig.# 8195.1

FAST RESPONSE
TEMPERATURE SENSOR
IGNITION MODULE
(AUTO IGNITION ONLY)

TRANSFORMER
ROLL-OUT SENSOR
GAS VALVE
Fig.# 8195.4

SEQUENCE OF OPERATION
INTERMITTENT IGNITION DEVICE (IID)
Boilers equipped with the IID system will automatically light the pilot burner first and then the main burner, each
time there is a call for heat from the room thermostat. Whenever the room thermostat is calling for heat, the
circulator supplied with the boiler, will be energized and should be running. The ignition control module will also
be energized to initiate the pilot ignition by opening the first main valve (pilot). At the same time, the electronic
spark generator in the module produces a high voltage spark pulse output that lights the pilot burner. If the pilot
burner does not light, the module will not energize the second main valve and the burners will not light. Ignition
spark continues only until the timed trial for ignition period ends. Then, the module goes into safety shutdown or
lockout. Lockout de-energizes the first main valve operator and closes the first main (pilot) valve in the gas control,
stopping pilot gas flow. The ignition control system must be reset by setting the thermostat below room
temperature for one minute or by turning off power to the module for one minute. When the pilot flame is
established, flame rectification circuit is completed between the sensor and burner ground. The flame sensing
circuit in the module detects the flame current, shuts off the spark generator and energizes the second main valve
operator which opens the second main valve. This allows gas to flow to the burners where it is ignited by the pilot
burner flame. When the thermostat is satisfied, the valve operators are de-energized shutting off the pilot and main
burners, and also the circulator.

START-UP PROCEDURES
SECTION 1. Filling the System
Fill system with water. Purge all air from the system
using purge valve sequence. After system is purged of
air, lower system pressure. Open valves for normal
system operation, fill system through feed pressure
regulator to minimum 12 PSI. Manually open air vent
on the compression tank until water appears, then close
vent.
On multiple zone systems, purge each zone separately. Isolate the other zones while one zone is being
purged of air.
Flush system before putting into operation to assure that foreign material does not damage pump seals.
SECTION 2. Checking the Circulator
Before lighting the boiler and after system is filled,
make sure that circulator is operating properly. Manual
gas valve should be off. By adjusting the wall thermostat to the maximum setting, circulator should run
immediately and allow water to flow through the boiler
and the entire system.
NOTE: Circulator motor supplied with the boiler does
not require lubrication.
CAUTION: In case of a prolonged power failure during
freezing weather conditions, boiler and piping system
must be drained completely to avoid possible damage
to the heating system.

SECTION 3. Lighting the Boiler
Safe lighting and other performance criteria were
met with the gas manifold and control assembly provided on the boiler when the boiler underwent tests
specified in ANSI-Z21.13a 1983 Standard.
CAUTION: Liquefied petroleum gas is heavier than air
and sinks to the ground. Exercise extreme care in
lighting boiler in confined areas.
For Standing Pilot Models
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.
A. This boiler has a pilot which must be lighted by
hand. When lighting the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING Smell all around the boiler
area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electric switch;
Do not use any phone in your building.
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier, call the
fire department.
C. Use only your hand to push in, move or turn the gas
control knob or lever. Never use tools. If the knob or
lever will not push in, move or turn by hand, don't try to
repair it, call a qualified service technician. Force or
attempted repair may result in a fire or explosion.
D. Do not use this boiler if any part has been under water.
Immediately call a qualified service technician to inspect
the boiler and to replace any part of the control system
and any gas control which has been under water.

10. Turn on all electric power to the boiler.
11. Set the thermostat to the desired setting.

FOR STANDING PILOT MODELS WITH ROBERTSHAW GAS VALVE, 2 STAGE OPERATION
(Models 90, 135 & 180)
1.
2.
3.
4.

TO TURN OFF GAS TO THE BOILER:
(Models 90, 135 & 180)

STOP! Read the safety information.
Set the thermostat to the lowest setting.
Turn off all electric power to the boiler.
Push in and move gas control lever counterclockwise
to "OFF" position.

1. Set the thermostat to the lowest setting.
2. Turn off all electric power to the boiler
3. Push in and move gas control lever counterclockwise
to "OFF" position. Do not force.

GAS CONTROL
LEVER SHOWN
IN "OFF" POSITION

FOR AUTOMATIC IGNITION MODELS.
Please read carefully and understand the following
safety information before operating the boiler.

GAS INLET

WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.

Fig. #8934.0

NOTE: Lever cannot be moved from "ON" to
"OFF" unless lever is pushed in slightly. Do not
force.
5. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you smell
gas, STOP! Follow "B" in the safety information
above on this label. If you don't smell gas, go to the
next step.
6. Locate pilot mounted on the right side of the
burner drawer, and right of first burner.

Fig.# 8083.2

HONEYWELL PILOT

A. This boiler is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot
by hand; or this boiler may not have a pilot and is
equipped with a hot surface ignition device which automatically lights the burners. Do not try to light the
burners by hand.
B. BEFORE OPERATING smell all around the boiler
area for gas. Be sure to smell next to the floor because
some gases are heavier than air and will settle on the
floor.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electric switch;
Do not use any phone in your building.
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
If you cannot reach your gas supplier, call the
fire department.

Fig.# 8041.2

ROBERTSHAW PILOT

C. Use only your hand to push in, move or turn the gas
control knob or lever. Never use tools. If the knob or
lever will not push in, move or turn by hand don't try to
repair it, call a qualified service technician. Force or
attempted repair may result in a fire or explosion.

7. Move control lever clockwise
to "SET"
position and immediately light pilot with a match.
8. Hold lever in "SET" position for 1/2 minute after
pilot is lit. Release lever, and it will spring back
to "PILOT" position. Pilot should remain lit. If it
goes out, repeat steps 4 through 8.
*If lever does not spring back to "PILOT" position
when released, stop and immediately call your
service technician or gas supplier.
*If the pilot does not stay lit after several tries,
move the gas control lever to "OFF" and call your
service technician or gas supplier.
9. Stand to the side of the boiler and move the gas
control lever counter-clockwise
to "ON".

D. Do not use this boiler if any part has been underwater. Immediately call a qualified service technician to
inspect the boiler and to replace any part of the control
system and any gas control which has been underwater.

TO TURN OFF GAS TO BOILER

FOR INTERMITTENT IGNITION (IID) WITH HONEYWELL OR ROBERTSHAW GAS VALVE (For All Models)
1.
2.
3.
4.

1. Set the thermostat at the lowest setting.
2. Turn off all the electric power to the boiler if service
is to be performed.
3. For Honeywell Valve:
Turn gas control knob clockwise
to
"Off". Make sure knob rest against stop.
For Robertshaw Valve:
Push in and move gas control lever to "Off"
position.

STOP! Read the safety information above.
Set the thermostat to the lowest setting.
Turn off all electric power to the appliance.
This boiler is equipped with an ignition device which
automatically lights the pilot. Do not try to light the
pilot by hand.

GAS CONTROL
KNOB SHOWN
IN "ON"
POSITION
GAS INLET

Fig. #8201.0

HONEYWELL
(Models 30 - 90)

5. For Honeywell Valve: Turn gas control knob
clockwise
to "Off".
For Robertshaw Valve: Push in and move gas
control lever to "Off" position.
6. Wait 5 minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas,
STOP! Follow "B" in the safety information above
on this label. If you don't smell gas, go to the next
step.
7. For Honeywell Valve: turn gas control counterclockwise
to "On".
For Robertshaw Valve: Move gas control lever
to "On" position.

HONEYWELL PILOT

SYSTEM SHUT DOWN PROCEDURE
To prevent the potential freezing damage to the
heating system, it is recommended that the following
system shut down procedure be performed.
1. Set the room thermostat to "OFF" or the lowest
setting.
2. Turn off all electric switches to the boiler.
3. Turn off all gas valves supplying gas to the boiler.
Refer to operating instruction label on the boiler.
4. Shut off the water supply to the boiler piping system
loop.
5. Open drain valve on the boiler to remove water from
the boiler and the piping circuits.
Note: It may be necessary to open the purge valves and/
or manual air vents to facilitate complete drainage of
water from the heating system.

GAS CONTROL
KNOB SHOWN
IN "OFF"
POSITION
GAS INLET

Fig. #8199.0

ROBERTSHAW
(All Models)

8. Turn on all electric power to the boiler.
9. Set thermostat to desired setting.
10. If the boiler will not operate, follow the instruction
"To Turn Off Gas To Boiler" and call your service
technician or gas supplier.

CAUTION: Should overheating occur or the gas supply
fails to shut off, DO NOT turn off or disconnect the
electrical supply to the pump. Instead, shut off the gas
supply at a location external to the boiler. Failure to
observe this precaution may aggravate the overheated
condition resulting in possible damage to the boiler and
injury to the user.
SECTION 4. Testing the Ignition Safety Shutoff.
The ignition system safety shutoff must be tested by
conducting the following method of tests:
For Standing Pilot Systems
a. With the main burners on, remove the pilot
adjustment cover screw.
* NOTE: There is no pilot adjustment cover on
Robertshaw 7200 gas valve.
b. Insert a small slot screw driver and turn the
adjustment screw clockwise
until pilot
flame goes out. Note and count number of turns
made.
c. Gas valve will shut off main burners after about
three (3) minutes. End of test. If the gas valve
will not shut off, follow the instructions "To Turn
Off Gas To Boiler" and call service technician or
your gas supplier.
d. Return pilot adjustment screw counter-clockwise
, same number of turns as in step (b).

FOR AUTOMATIC IGNITION SYSTEMS
Intermittent Ignition (IID)
1. Turn on power to the ignition systems and turn gas
supply off at the gas valve.
2. Check ignition module as follows:
a. Set the thermostat or controller above room
temperature to call for heat.
b. Watch for continuous spark at the pilot burner.
c. Time the spark operation. Time must be within
the lockout timing period (15 or 90 seconds).
d. Turn thermostat down to end call for heat and
wait 60 seconds on lockout models before
beginning step 3.
3. Turn on gas supply.
4. Set thermostat or controller above room temperature to call for heat.
5. Systems should start as follows:
a. Spark will turn on and pilot gas valve will open
at once. Pilot burner should ignite after gas
reaches the pilot burner.
b. Spark ignition should cut off when pilot flame is
established.
c. Main gas valve should open and main burner
should ignite after gas reaches the burner port.

S
E
T
PILOT P
I
ADJ
L
O
T
O
N

O
F
F

PILOT KEY

Fig.# 8935.0

Pilot Adjustment

ROBERTSHAW 7200 GAS VALVE
(Models 90, 135 & 180)

e. Replace pilot adjustment cover screw, then
follow the lighting instructions to get boiler
ready for operation.

SAFE SHUTDOWN TESTS
LIMIT ACTION
With the burner operating, lower the high limit
setting to simulate an overheated boiler. Normal shutdown should occur. Restore the normal limit setting,
and the burner should restart.
FLAME FAILURE
With burner operating, close the manual fuel valves
to simulate a flame failure. System should lock out after
safety switch timing (15 seconds). After the safety
switch has cooled, open the manual valves (relight
standing pilots) and reset the safety switch; the burner
should restart.

Fig. #8964

PILOT BURNER FLAME (STG PILOT UNITS)
NORMAL INSPECTION PROCEDURES
First and third month after initial start up and then on
an annual basis. If problems are found, refer to Trouble
Shooting Guide for additional directions.

INSPECTION PROCEDURES
BURNERS

1. Remove top of boiler and inspect heat exchanger
for soot and examine venting system.
2. Remove rear header and inspect for scale deposits.
*3. Inspect pilot and main burner flame and firing rate.
*4. Inspect and operate all controls and gas valve.
*5. Visually inspect system for water leaks.
*6. Oil pump motor and bearing assembly, if oil cups
are provided.
7. Check flow switch paddle.
8. Clean room air intake openings to assure adequate
flow of combustion and ventilation air.
9. Keep boiler area clear and free from combustible
materials, gasoline, and other flammable vapors
and liquids.
*Should be checked monthly. (Takes approximately 15
minutes).

Clean main burners and air louvers of dust, lint and
debris. Keep boiler area clear and free from combustibles and flammable liquids. Do not obstruct the flow of
combustion and ventilating air. Make visual check of
burner and pilot flame. Yellow flame indicates clogging
of air openings. Lifting or blowing flame indicates high
gas pressure. Low flame indicates low gas pressure.

4"
Max.

Fig. #8144

MAIN BURNER FLAME
NOTE: Modulating burner flame varies in height from
approximately 1/4" at low fire to approximately 4" in
high fire.

LOW WATER CUT OFF WHEN INSTALLED
The low water cut off automatically shuts down
burner whenever water level drops below probe. 90
second time delay prevents premature lockout due to
temporary conditions such as power failure or air pockets. Flush float type devices at beginning of each
heating season.
PROCEDURE FOR CLEANING FLUE GAS
PASSAGE-WAYS
Soot will clog areas behind fins and cause eventual
tube failure. Any sign of soot at base of burners or
around outer jacket indicates a need for cleaning.
1. Lift off draft hood and flue collector by removing
bolts and screws.
2. Remove "V" baffles from heat exchanger.
3. Remove burner tray, see Burner Drawer Removal.
4. Take garden hose and wash heat exchanger, making sure soot is removed from between fins.
(Avoid excessive water against refractory).
5. Reassemble; when boiler is fired, some steam will
form from wet refractory. This is normal.
NOTE: In extreme cases it may be necessary to
remove the heat exchanger completely for cleaning.
The simplest method is steam cleaning at a local car
wash. DO NOT WIRE BRUSH!

CAUTION:
Soot is combustible, so exercise extreme care.
BURNER DRAWER REMOVAL
1. Shut off power and gas supply to the boiler. Disconnect union(s) and pilot tubing when present;
then loosen and remove burner hold down screws.
2. Disconnect wires at gas valve and slide burner
drawer out.
MAIN BURNER AND ORIFICE REMOVAL
1. Remove screws and burner hold down bracket.
NOTE: If the heat exchanger is sooted badly, the
burner hold down bracket and spacer can become
distorted from direct flame impingement and this usually necessitates replacement of these parts.
2. Lift burners from slotted spacer and slide from
orifices. Clean with a wire brush.
3. Orifices usually do not need to be replaced. To
clean, run either copper wire or wood through
orifice. Do not enlarge hole. To remove orifice, use
a socket wrench and remove the manifold. DO
NOT overtighten when reinstalling.

RAYPAK TUBE CLEANING KIT

Extension Pieces (5)
REPAIR SECTION
TUBE CLEANING PROCEDURE (TYPICAL)
Establish a regular inspection schedule, the frequency depending on the local water condition and
severity of service. Do not let the tubes clog up solidly.
Clean out deposits over 1/16" in thickness.
The boiler may be cleaned from the side opposite
the water connections as shown, without breaking pipe
connections. It is preferable, however, to remove both
headers for better visibility through the tubes and to be
sure the residue does not get into the system.
Note that you do not remove the top pan or the heat
exchanger generally.
After reaming with the auger, mount the wire brush
and clean out the debris remaining in the tubes.

Auger with Carbide Tip

Wire Brush

Fig. #8154

Another method is to remove the heat exchanger,
ream tubes and immerse heat exchanger in non-inhibited de-scale solvent.
HEAT EXCHANGER REMOVAL
1. Shut water, gas and electricity off, close valves and
relieve pressure, remove relief valve. Remove side
inspection panels.
2. Remove top holding screws.
3. Remove draft diverter, lift and remove top and flue
collector on stack type models. Remove inspection
panels.
4. Loosen bolts and disconnect flange nuts on inletoutlet header, loosen union(s) at gas pipe, and slide
boiler away from piping until studs clear the heater.
5. Remove heat exchanger corner brackets.

6. Remove combustion chamber clips at the four
corners of the heat exchanger.
7. Lift heat exchanger straight up using caution not to
damage refractory.

9.
10.
11.

13.

boiler and piping system for leaks at full line pressure. Run system circulating pump for a minimum
of 1/2 hour with boiler shut-off.
Shut down entire system and vent all radiation units
and high points in system piping. Check all strainers for debris. Expansion tank water level should
be at the 1/4 mark and the balance of the tank filled
with air (when using Air-X-Tank).
Install flue collector, jacket top and inspection panels. Install top holding screws. Install draft diverter
and vent piping if so equipped.
If gas piping was disconnected, reconnect gas
piping system and check for leakage using a soap
solution.
Check for correct water pressure and water level in
the system. Make sure that system pump operates
immediately on the call for heat. The system is
ready for operation.
Within two (2) days of start-up, recheck all air vents
and expansion tank levels.

HEAT EXCHANGER RE-ASSEMBLY

COMBUSTION CHAMBER REMOVAL

1. Heat exchanger water header O-rings should be
replaced with new ones.
2. Install inlet-outlet and return water headers and
install header retainer nuts and torque nuts evenly.
3. Replace "V" baffles.
4. Install thermostat sensing bulbs in header wells
and replace bulb retaining clips.
5. Install inlet and return pipes in water headers using
pipe thread sealant.
6. Install water pressure relief valve, flow switch, and
low water cutoff devices if so equipped.
7. Open water supply and return shut-off valves. Fill
boiler and water piping system with water. Check

To remove combustion chamber you must first
have removed the heat exchanger. Unbolt metal combustion chamber retainer from top and remove combustion chamber panels individually.

5. TROUBLE SHOOTING GUIDE
IMPORTANT NOTICE

These instructions are primarily intended for the use of qualified personnel specifically trained and experienced
in the installation of this type of heating equipment and related system components. Installation and service
personnel may be required by some states to be licensed. Persons not qualified shall not attempt to install this
equipment nor attempt repairs according to these instructions.
PROBLEM(S)
1)When room thermostat is turned on,
boiler does not operate.

CAUSE(S)
1) No power to the boiler.

SOLUTION(S)
1) Check circuit breakers, disconnect
switch. Make sure power is on.

2) Defective room thermostat or disconnected wire in thermostat circuit.

2) Check continuity on thermostat and
wiring circuit. Replace thermostat, or
repair wiring connections.
3) Check secondary voltage. If no 24V,
replace transformer.
4) Check relay coil or contacts. Replace
as required.
5) Replace pump.

3) Defective transformer.
4) Defective pump relay.
5) Defective pump
2)When room thermostat is calling for
heat, pump is on, but burners will not
turn on.

1) For Standing pilot models pilot burner
not lighted.
2) If pilot burner will not stay lighted,
thermocouple or gas valve may be
defective.
3) Gas knob in "Pilot" position.
4) For automatic ignition models,
gas valve knob is in "off" position.
5) Vent switch is open.

6) Roll-out switch is open.

7) High limit is open.
8) Fast Response Temperature
Sensor probe is defective.

9) Fast Response Temperature
sensor board is defective.

1) Light pilot burner. (Follow lighting
instructions on rating plate).
2) Check thermocouple MV generation.
If less than 25MV (open circuit), re
place thermocouple. If between 2535 MV, replace gas valve.
3) Turn knob to "ON" position.
4) Turn gas knob to "ON". If ignition
module locks out, reset by interrupting power to boiler.
5) Check for blockage of venting system
or disconnected vent piping. After
problem is corrected push button to
reset, or replace single use type vent
switch.
6) Check for blockage of flue or sooted
heat exchanger. After problem is
corrected push button to reset or replace single use type roll-out switch.
7) Setting may be too low. Check water
flow and adjust setting to obtain 2030°F temperature rise.
8) Red LED on circuit board will be ON
to indicate a loose sensor connection
or a shorted sensor. Check terminal
connectors or replace sensor as required.
NOTE: Red LED will also be ON if
sensor temperature exceeds 300°F or
drops below - 20°F. It will turn OFF
when sensor temperature returns to the
proper range. Yellow LED will be ON, if
temperature exceeds 240°F. It will turn
off when sensor temperature falls below
180°F. When either Red or Yellow LED
is ON, boiler will be shut down.
9) Check voltage across output and
common terminals. If no 24V is present, replace board.

10) Defective ignition module or
defective gas valve.

10) Before module goes into a lock-out,
check voltage across MV and MV/
PV. If no 24V is present, replace
module. If 24V is present, replace
gas valve.

3) Pilot Outage.
(Standing pilot models)

1) Too low or too high gas pressures.
2) Restricted pilot.
3) Weak thermocouple.

1) Adjust inlet gas pressure as shown
on rating plate.
2) Clean pilot orifice.
3) Replace thermocouple.

4) Yellow lazy flame.

1) Too low gas pressure.

1) Adjust manifold pressure as shown

2) Restricted burner intake ports.
3) Restricted gas line.
5) Sooting

1) Insufficient combustion air.
2) Improper venting.
3) Severe yellow burner flames.

on rating plate.
2) Clean burners free of debris or insects.
3) Clean gas line or increase gas line
piping.
1) Refer to installation instructions re
garding combustion air requirements.
2) Refer to installations instructions.
3) See yellow flame section above.

ADJUSTMENTS/REPLACEMENTS OF
COMPONENTS

3. Flame Roll-out Switch Replacement
a) Shut off electrical power to the boiler.
b) Remove wiring connections to switch.
c) Remove screws (2) holding the switch.
d) Reverse above procedure to re-install.

DANGER - SHOCK HAZARD
Make sure electrical power to the boiler is disconnected to avoid potential serious injury or damage to components.

4. Vent Thermal Switch Replacement
a) Shut off electrical power to the boiler.
b) Remove wiring connections to switch.
c) Remove the screws (2).
d) Reverse above procedure to re-install.

1. Gas Valve Replacement
a) Shut off electrical power and gas supply to the
boiler.
b) Remove gas piping to gas valve inlet.
c) Disconnect wiring connections, pilot tubing
(when equipped).
d) Remove screws (2) holding the burner tray.
e) Slide burner tray out.
f) Remove gas valve bracket screws and bracket.
g) Unscrew gas valve from gas pipe.
h) Reverse above procedure to re-install.

5. Ignition Module Replacement
a) Shut off electrical power to the boiler.
b) Remove control cover screws and open control
compartment.
c) Disconnect wiring connections to module.
d) Remove screws (2) holding module.
e) Reverse above procedure to re-install.

2. Pilot Burner Cleaning or Replacement (Standing
Pilot)
a) Shut off electrical power and gas supply to the
boiler.
b) Disconnect gas piping to gas valve.
c) Disconnect wiring connections to gas valve.
d) Remove screws (2) holding the burner tray.
e) Slide burner tray out.
f) Remove screw holding pilot lighter tube.
g) Remove screws (2) holding pilot bracket on the
burner tray.
h) Disconnect thermocouple and pilot tubing from
the gas valve.
i) Remove pilot burner from pilot bracket.
j) Remove pilot orifice and blow away lint or dirt.
Clean with wire or small brush.
NOTE: Make sure pilot orifice is clear, but do not
enlarge the hole.
k) Reverse above procedure to re-install.
HONEYWELL PILOT

6. Transformer Replacement
a) Shut off electrical power to the boiler.
b) Remove control cover screws and open control
compartment.
c) Disconnect wiring connections from transformer leads.
d) Remove screws (2) holding transformer.
e) Reverse above procedure to re-install.
7. Pump Relay Replacement
a) Shut off electrical power to the boiler.
b) Remove control cover screws and open control
compartment.
c) Disconnect wiring to the relay.
d) Remove screws (2) holding relay.
e) Reverse above procedure to re-install.
8. Adjustable High Limit Control
a) Shut off electrical power to the boiler.
b) Remove control cover screws and open
control compartment.
c) The control is factory set at 180°F. To reset to
another setting, use a small screw driver
and turn dial clockwise
to lower the
temperature or counter-clockwise
to
raise the setting.
d) To replace the limit control, disconnect the wiring connections.
e) Remove screws (2) holding the limit control.
f) Remove upper access panel.
g) Remove the wedge or retaining clip holding
the sensing bulb in the control well in the in/out
header.
h) Pull out the sensing bulb carefully from the
control well.
i) Remove the limit control with capillary from
unit.

ROBERTSHAW PILOT

PILOT
AIR
OPENING

PILOT

ORIFICE
ORIFICE

Fig.# 8045.2

Fig.# 8102.1

12. 2-Staged Controller (Models 90, 135 & 180)
a) Shut off electrical power to the boiler.
b) Remove control cover screws and open control compartment.
c) The control is factory set at 160°F. To reset
to another setting, use a small screw driver
and turn dial clockwise
to lower the
temperature or counter-clockwise
to
raise the setting.
d) To replace the staged controller, disconnect
the wiring connections.
e) Remove screws (2) holding the staged
controller.
f) Remove upper access panel.
g) Remove the wedge or retaining clip holding
the sensing bulb in the control well in the in/
out header.
h) Pull out the sensing bulb carefully from the
control well.
i) Remove the staged control with capillary
from unit.
j) Reverse above procedure to re-install.

j) Reverse above procedure to re-install.
9. Fast Response Temperature Sensor Module
Replacement
a) Shut-off electrical power to the boiler.
b) Remove control cover screws and open
control compartment.
c) Disconnect wiring connections to the board.
d) Carefully pull out the control board from the
nylon pin supports.
e) Reverse above procedure to re-install.
10. Fast Response Temperature Sensor Probe
Replacement
a) Shut off electrical power to the boiler.
b) Shut off water supply to the boiler and open
drain valve to remove water to the sensor
probe level.
c) Remove control cover screws and open
control compartment.
d) Disconnect wire leads from control board.
e) Remove upper access panel.
f) Remove sensor probe from in/out header.
g) Reverse above procedure to re-install.

6. REPLACEMENT PARTS LIST

11. Circulator Replacement
a) Shut off electrical power to the boiler.
b) Shut off water supply and open drain valve
to remove water in the piping at the pump
level.

NOTE: To supply the correct part it is important that you
state the model number, serial number and type of gas
when applicable.
Any part returned for replacement under standard
company warranties must be properly tagged with
RAYPAK return parts tag, completely filled in with the
heater serial number, model number etc., and
shipped to the Company freight prepaid.

CAUTION: To avoid damage to electrical components
keep water from getting into the control compartments
and gas valve.
c) Disconnect wiring and conduit connections to
the pump.
d) Disconnect the by-pass tube connections to
the inlet flange.
e) Remove the nuts and bolts at the inlet and
outlet flanges. Remove old gaskets.
f) Remove the pump.
g) Reverse the above procedure to re-install.
Use new gaskets and make sure they are
seated properly when tightening the nuts
and bolts.

If determined defective by the Company and within
warranty, the part will be returned in kind or equal
substitution, freight collect. Credit will not be issued.
RAYPAK, INC.
31111 Agoura Road
Westlake Village, CA 91361-4699

4-C

2-V

1-V
5-M
3-M

2-S
6-H

1-M
3-H
2-H 1-H

9-H

1-R (30 & 42)

7-H
1-S

4-M
3-C

6-H

4-H
3-S

1-R

5-H
8-H
1-R
3-J
1-J
1-C

4-P

4-S

2-B
2-J

2-C

1-B

5-P
1-G

3-B

4-B
4-C

HONEYWELL STANDING PILOT

HONEYWELL IID

3-P

ROBERTSHAW STANDING PILOT
3-P

1-P

1-P
1-P
2-P

2-P
6-P
8-P
Fig. # 8189.3

2-P
6-P

9-P
8-P

*Bypass valve supplied on sizes H-0135 and H-0180 only.
35

6-P
Fig. # 9112

8-P

Fig. # 8190.0

BOILERS MANUFACTURED AFTER AUGUST 11, 1994 WITH SERIAL #9408116901 OR LATER, HAVE IID IGNITION IN
LIEU OF HSI IGNITION.

BOILERS MANUFACTURED AFTER AUGUST 11, 1994 WITH SERIAL #9408116901 OR LATER, HAVE IID IGNITION IN
LIEU OF HSI IGNITION.
CALL OUT
M
1-M
2-M
3-M
4-M
5-M
6-M
7-M

P
1-P

2-P

3-P
4-P
5-P

6-P
8-P
8-P
R
1-R
S
1-S
2-S
3-S
4-S
V
1-V
2-V

DESCRIPTION
MISCELLANEOUS
PRV 30 PSI
Deliming Kit
T & P Gauge
Drain Valve
Pump Inline Taco
Pump Inline Grundfos
Pump Cartridge (Taco)
Wire/Harness Std.
Wire/Harness HSI Honeywell
Wire/Harness HSI Fenwal
Wire/Harness IID
PILOT
Pilot Nat. Std.
Pilot Pro. Std.
Pilot Nat. IID
Pilot Pro. IID
Pilot Orifice Nat. Std.
Pilot Orifice Pro Std.
Pilot Orifice Nat. IID
Pilot Orifice Pro. IID
Pilot Thermocouple
Hot Surface Ignitor HSI
Ignition Control HSI Honeywell
Ignition Control HSI Fenwal
Ignition Control IID Honeywell
Pilot Mtg. Bracket
Pilot Tube
High Tension Wire IID
REFRACTORY
Refractory Kit
SHEETMETAL
Jacket Top
Flue Collector
Access Panel
Control Panel Cover
VENTING
Drafthood
Vent Damper

30B

42B

66B

90B

135B

180B

501410
052871F
600671
006536F
003968F

501410
052871F
600671
006536F
004251F

951116F
003969F
003970F
003971F
005602F

501410
052871F
600671
006536F
005097F
004714F
951166F
004256F
004257F
004258F
005603F

003972F
003973F
005467F
005468F
003974F
003975F
003903F
004308F
600003
003976F
601005F
601129F
004935F
306239
400275
002654B

003977F

003978F

004259F

004260F

003979F
003981F
003983F
003984F

003980F
003982F
003983F
003984F

004261F
004262F
004264F
004265F

004268F
004263F
004264F
004265F

003985F
004709

003986F
004710

004266F
004711

004267F
004712

42B

66B

90B

135B

180B

004273F
004274F
004275F
004276F
005473F
005274F

004698F
004699F
004700F
004701F
005475F
005476F

004277F
004278F
004279F
004280F
005477F
005478F

004293F
004294F
004295F
004296F
005481F
005482F

004702F
004703F
004704F
004705F
005483F
005484F

004297F
004298F
004299F
004300F
005485F
005486F

004281F
004282F
004283F
004284F
005487F
005488F

004285F
004286F
004287F
004288F
005489F
005490F

GAS CONVERSION KITS **
30B
HONEYWELL GAS VALVE
Standing Pilot Nat. to Pro.
004269F
Standing Pilot Pro. to Nat.
004270F
Hot Surface Ignition Nat. to Pro.
004271F
Hot Surface Ignition Pro. to Nat.
004272F
IID Nat. to Pro. Honeywell
005471F
IID Pro. to Nat. Honeywell
005472F
ROBERTSHAW GAS VALVE
Standing Pilot Nat. to Pro.
004289F
Standing Pilot Pro. to Nat.
004290F
Hot Surface Ignition Nat. to Pro.
004291F
Hot Surface Ignition Pro. to Nat.
004292F
IID Nat. to Pro. Robertshaw
005479F
IID Pro. to Nat. Robertshaw
005480F
** Gas Conversions are to be done only by a Qualified Agency.
IGNITION CONTROL CONVERSION KIT
Robertshaw HSI Control to Fenwal HSI Control

004678F

www.raypak.com

Raypak, Inc., 31111 Agoura Road, Westlake Village, CA 91361-4699 (818) 889-1500 FAX (818) 889-4522
Raypak Canada LTD, 2805 Slough Street, Mississauga, Ontario, Canada L4T 1G2 (905) 677-7999 FAX (905) 677-8036
Raypak Australia Pty. Ltd, 7 Geddes St., Mulgrave, Victoria, Australia 3170 (6139) 560 4944 FAX (6139) 560 4974
Litho in U.S.A.

Source Exif Data:

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Page Count                      : 38
Create Date                     : 1999:11:16 14:55:25
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Subject                         : 2100.50(residential I-O)
Author                          : TManapol
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Title                           : 2100.50(residential I-O)

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Raypak 0090B 0135B Users Manual 2100.50(residential I O)

0090B 0135B to the manual 5fc10e28-a3c7-49e3-918b-e5bc4b3aa934

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