Amtrol Boilermate Rtr Installation Manual 9040 586 07_08 Indirect IO

2014-12-12

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West Warwick, Rhode Island 02893

INSTALLATION, OPERATION
& MAINTENANCE

INSTRUCTIONS

BOILERMATE®

INDIRECT-FIRED WATER HEATERS

MODELS COVERED:
• WH-7 & 9 Classic Series
• Top Down™ TD Series
• RTR models
• WHS Premier Series

MODELS CODES:
P: Packaged with circulator & Smart Control™
L: Less Circulator, with Smart Control™
Z: Dial Aquastat
C: High-output commercial exchanger
DW: Double-wall heat exchanger
RTR: Pre-piped and wired

INSTALLER: LEAVE THIS MANUAL WITH THE OWNER
IMPORTANT GENERAL SAFETY INFORMATION - ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING
INSTRUCTIONS.
READ CAREFULLY THE PRODUCT INSTALLATION, OPERATING AND MAINTENANCE MANUAL. FAILURE
TO FOLLOW THE INSTRUCTIONS AND WARNINGS IN THE MANUAL MAY RESULT IN SERIOUS OR
FATAL INJURY AND/OR PROPERTY DAMAGE, AND WILL VOID THE PRODUCT WARRANTY. THIS PRODUCT MUST BE
INSTALLED BY A QUALIFIED PROFESSIONAL. FOLLOW ALL APPLICABLE LOCAL AND STATE CODES AND REGULATIONS,
IN THE ABSENCE OF SUCH CODES, FOLLOW THE CURRENT EDITIONS OF THE NATIONAL PLUMBING CODE AND NATIONAL
ELECTRIC CODE, AS APPLICABLE.
THIS IS THE SAFETY ALERT SYMBOL. IT IS USED TO ALERT YOU TO POTENTIAL PERSONAL INJURY AND OTHER
HAZARDS. OBEY ALL SAFETY MESSAGES THAT FOLLOW THIS SYMBOL TO REDUCE THE RISK OF PERSONAL
INJURY AS WELL AS PROPERTY DAMAGE.
The heat transfer medium must be water or other nontoxic fluid having a toxicity rating or class of 1, as
listed in Clinical Toxicology of Commercial Products, 5th edition. The pressure of the heat transfer
medium must be limited to 30 PSIG by an approved safety or relief valve.
Part #: 9040-586 (07/08)

1. TABLE OF CONTENTS
2. Pre-Installation Checklist..................................................2

10. Wiring All Ready-To-Run (RTR) Models........................ 23

3. Required Components and Accessories Checklist..........3

11. Startup Procedure For All Models................................. 25

4. WH-7 & 9 Classic Series Piping Installation.....................4

12. Setting the Smart Control™........................................... 26

5. Top Down™ TD-Series Piping Installation.......................6

13. Troubleshooting.............................................................. 27

6. Ready-To-Run RTR-Series Piping Installation.................8

14. Replacement Parts......................................................... 28

7. WHS Premier Series Piping Installation......................... 10

15. Cleaning the BoilerMate® Heat Exchanger.................... 29

8. Wiring All Smart Control™ Models................................ 12

16. General Safety Information............................................ 30

9. Wiring All Dial Control Models (Except RTR Models).......... 20

2. PRE-INSTALLATION CHECKLIST
IMPORTANT STEPS AND DECISIONS REQUIRED BEFORE INSTALLATION
M THIS PRODUCT MUST BE INSTALLED AND
MAINTAINED BY A LICENSED PROFESSIONAL. IN
ADDITION TO THE INSTRUCTIONS IN THIS MANUAL,
FOLLOW ALL APPLICABLE LOCAL AND STATE CODES
OR IN THE ABSENCE OF SUCH CODES, THE CURRENT
EDITIONS OF THE NATIONAL PLUMBING CODE AND
THE NATIONAL ELECTRIC CODE.
M DRIP PAN AND DRAIN: This appliance should not
be installed in an area where leakage of the tank or
connections can result in damage to the area adjacent
to the appliance or to lower floors of the structure.
When such locations cannot be avoided, a suitable
drain pan, adequately drained and kept clear, must be
installed under the appliance.
M CAUTION: Determine whether your water is corrosive
or acidic, and that there are no suspended solids,
toxic or other substances or abnormally high chlorine
levels in the water that could damage or affect the
BOILERMATE® or the rest of your plumbing system.
USE
GLYCOL
ONLY
WITH
DOUBLE-WALLED HEAT EXCHANGER
MODELS. Glycol is a hazardous substance. To avoid
seepage or leakage of glycol to surfaces where
humans or animals can ingest it, use glycol only in
double-walled units, so that any leaks will most likely
be released to the atmosphere. However, a leak to a
surface area may still occur, so any use of glycol must
be monitored closely and humans and animals should
be protected from contact with the unit.

time, the BOILERMATE® may not be supplied with enough
hot boiler water to “recover” adequately. The delivery of
domestic hot water will be diminished. In many, but not all
cases, this is not a problem because the routine oversizing
of boiler output is adequate for both loads.
2. Priority System - Under this wiring option the
BOILERMATE® will be supplied before space heating.
In limited circumstances, space
heating can be lost in the home in
this priority mode. Any demand for space heating is
postponed until the BOILERMATE® has reached its set
temperature. This delay in supplying the space heating
zones is usually not noticed by the inhabitants of the
living spaces. However, in the event of certain
malfunctions such as circulator or thermostat failure,
space heating could be delayed indefinitely. If
undetected and uncorrected, freezing damage to piping
could result.
M Select Circulator versus Zone Valve
The flow of hot boiler water to the BOILERMATE® can
be controlled with either a motorized zone valve or a
circulator.
1. Separate circulator. The recommended way to
provide adequate flow through the BOILERMATE®
heat exchanger is to use a separate dedicated
circulator with a minimum flow rate of 5 gpm. This
option may be used even though the heating system
utilizes zone valves.

Do not connect the BOILERMATE®
domestic supply with baseboard
or other space heating units or elements. Any
contaminants in the baseboard units will contaminate
the potable water in the BOILERMATE® and also
adversely affect its performance.
M Wiring Options. Select either a Non-Priority or Priority
System:
Two options are available when wiring the controls of the
BOILERMATE® in the space heating system (boiler and
distribution elements).
1. Non-Priority System - The controls of the
BOILERMATE® must be wired as a separate heating
zone with a standard zone valve or a separate
circulator dedicated to the BOILERMATE® “zone”.
NOTICE: In this non-priority option, the BOILERMATE®
will be supplied just as another zone. This means that if all
space heating zones call for hot boiler water at the same

2. Zone valve (system flow of 4-8 gpm). If a zone valve
is to be used, a minimum flow rate of 5 gpm with all
zones in use is required. A full-port zone valve should
be used.
M All installations require a low-water cut-off or automatic fill
valve on your boiler system to reduce the risk of boiler water
loss.
M Steam boiler installations require a low-water cut-off which
is also required by most codes.
M Installation of a vacuum breaker is required to prevent
damage to the BOILERMATE® when drained. There must
be no valves installed between the vacuum breaker and
BOILEMATE®.

-2-

3. REQUIRED COMPONENTS AND
ACCESSORIES CHECKLIST

MODEL

CIRCULATOR

ZONE VALVE*

SHUTOFF
VALVE

VACUUM
BREAKER

RELIEF THERMAL EXPANSION
VALVE
TANK

DRAIN

Residential = 5GPM *If Circulator not used
WH SERIES Commercial = 10GPM
3/4” Full Port
4
1
Included

Except “P” Models
or 1” STD

Required
(See Therm-X-Trol®
Sizing Guide)

Included

5GPM
TD SERIES
Except “P” Models

*If Circulator not used
3/4” Full Port
4
1
Included
or 1” STD

Required
(See Therm-X-Trol®
Sizing Guide)

Included

N/A
4
1
Included

Required
(See Therm-X-Trol®
Sizing Guide)

Included

Residential = 5GPM *If Circulator not used
WHS SERIES Commercial = 10GPM
3/4” Full Port
4
1
Included

Except “P” Models
or 1” STD

Required
(See Therm-X-Trol®
Sizing Guide)

Included

RTR SERIES

Included

ALL INSTALLATIONS REQUIRE TEFLON® SEALING TAPE OR PIPE DOPE FOR THREADED JOINTS.
SEE HEAT EXCHANGER PRESSURE DROP CHART TO DETERMINE PUMP HEAD REQUIREMENTS.

Use this chart to select the proper circulator for your BOILERMATE®.

If a steel hydropneumatic tank is in place, AMTROL® recommends replacing it with a
properly sized EXTROL® or Radiant EXTROL® expansion tank. Otherwise, significant
heat transfer problems can occur by causing air to be trapped in the heat exchanger. If the boiler system has
an EXTROL® or Radiant EXTROL® expansion tank and the boiler temperatures are being changed, resize the
EXTROL® or Radiant EXTROL® expansion tank.

-3-

4. WH-7 & 9 CLASSIC SERIES
PIPING INSTALLATION
DOMESTIC WATER PIPING

BOILER PIPING

1. Thread the included 3/4” brass tee onto the pipe marked
COLD WATER.

1. Plumb the circulator or zone valve on the BOILER SUPPLY
line. If using a separate circulator, the pump flange
can be mounted directly to the threaded pipe marked
BOILER SUPPLY. Alternately, the circulator can be placed
anywhere on the boiler supply line.

2. Screw the 3/4” drain valve into the opposite end of the brass
tee.
3. Connect the cold water supply to the remaining port on the
brass tee.
4. Temporarily attach the top tee fitting (with o-ring face seal)
to the union nut on top of the tank. Test fit the piping near
the tee before soldering. Remove the tee before soldering
connections to avoid damage to the top o-ring seal or
plastic liner.

2. Pipe the BOILER RETURN connection to the boiler return
line.
Be sure the return line is NOT
plumbed to the suction side of
any heating circulators. This may require moving the
heating circulator off the boiler tapping on packaged
boilers. Failure to do so will result in overheating and
tank damage when the heating system is in operation.

Note: Do not solder piping within 24 inches of the top tee
fitting while attached to the tank.

3. Install a weighted flow check on the boiler return line. This
is not necessary on systems utilizing a zone valve to control
the BoilerMate® temperature.

5. Make an 8-inch “heat trap” as shown in the diagram.
This will reduce standby losses from heat migrating up
the piping. Continue this line to the domestic hot water
system.

4. After completing the boiler piping, slowly open the boiler fill
valve and pressurize the BoilerMate® loop. Check for leaks
and repair as necessary. Proceed to the appropriate wiring
section in this manual.

6. Install the included T&P relief valve on the top port of the
top tee connection. Plumb a blowdown tube to within 6
inches of a floor drain or as directed by plumbing code.

If installing on city water supply a
properly sized THERM-X-TROL® is
required with the BoilerMate® and should be installed as set
forth in the THERM-X-TROL® product installation manual.

7. When all domestic water piping is complete, open the cold
water supply and allow some water to enter the tank. Look
and listen for signs of leaks and repair as necessary before
continuing.
Note: If installing on a city supply, ensure a dedicated
Thermal Expansion tank (Therm-X-Trol® or equivalent) is
used.

Clearance From Combustible Surfaces
LEFT SIDE . . . . . . . . . . . . . 1”
RIGHT SIDE . . . . . . . . . . . . 1”
TOP . . . . . . . . . . . . . . . . . . 9”

REAR . . . . . . . . . . . . . . . . . 1”
FLOOR . . . . . . . . . . . . . . . . 0”
FRONT . . . . . . . . . . . . . . . . 1”

Recommended Clearance For Servicing
LEFT . . . . . . . . . . . . . . . . . 12”
RIGHT . . . . . . . . . . . . . . . . 12”
FRONT . . . . . . . . . . . . . . . . 30”

HEAD ROOM . . . . . . . . . . . 9”
REAR . . . . . . . . . . . . . . . . . 1”

T&P RELIEF VALVE
HOT WATER OUTLET

UNION NUT

BOILER RETURN (Top Left)
BOILER SUPPLY (Top Right)
COLD WATER INLET
(Bottom Center)

-4-

PIPING USING SEPARATE CIRCULATOR PUMP (RECOMMENDED)

PIPING USING ZONE VALVE WITH EXISTING HEATING SYSTEM CIRCULATOR

-5-

5. TOP DOWN™ TD-SERIES
PIPING INSTALLATION
DOMESTIC WATER PIPING
1. Connect the cold water supply to the pipe labeled COLD
WATER
2. Connect the HOT WATER piping to the domestic hot water
system.
3. Make an 8-inch “heat trap” on the HOT WATER outlet as
shown in the diagram. This will reduce standby losses from
heat migrating up the piping.
4. When all domestic water piping is complete, open the cold
water supply and allow some water to enter the tank. Look
and listen for signs of leaks and repair as necessary before
continuing.
Note: If installing on a city supply, ensure a dedicated
Thermal Expansion tank (Therm-X-Trol® or equivalent) is
used.
5. Install a blowdown tube on the T&P relief valve outlet.
Plumb to within 6 inches above a floor drain or as directed
by plumbing code.

BOILER PIPING

can be mounted directly to the threaded pipe marked
BOILER SUPPLY. Alternately, the circulator can be placed
anywhere on the boiler supply line.
2. Pipe the BOILER RETURN connection to the boiler return
line.
Be sure the return line is NOT
plumbed to the suction side of any
heating circulators. This may require moving the
heating circulator off the boiler tapping on packaged
boilers. Failure to do so will result in overheating and
tank damage when the heating system is in
operation.
3. Install a weighted flow check on the boiler return line. This
is not necessary on systems utilizing a zone valve to control
the BoilerMate® temperature.
4. After completing the boiler piping, slowly open the boiler fill
valve and pressurize the BoilerMate® loop. Check for leaks
and repair as necessary. Proceed to the appropriate wiring
section in this manual.
If installing on city water supply a
properly sized THERM-X-TROL® is
required with the BoilerMate® and should be installed as set
forth in the THERM-X-TROL® product installation manual.

1. Plumb the circulator or zone valve on the BOILER SUPPLY
line. If using a separate circulator, the pump flange
Clearance From Combustible Surfaces

Recommended Clearance For Servicing

LEFT SIDE . . . . . . . . . . . . . 1”
RIGHT SIDE . . . . . . . . . . . . 1”
TOP . . . . . . . . . . . . . . . . . . 9”

LEFT . . . . . . . . . . . . . . . . . 12”
RIGHT . . . . . . . . . . . . . . . . 12”
FRONT . . . . . . . . . . . . . . . . 30”

REAR . . . . . . . . . . . . . . . . . 1”
FLOOR . . . . . . . . . . . . . . . . 0”
FRONT . . . . . . . . . . . . . . . . 1”

HEAD ROOM . . . . . . . . . . . 9”
REAR . . . . . . . . . . . . . . . . . 1”

COLD WATER INLET
(Top Center)
BOILER SUPPLY
(Bottom Right)

T&P RELIEF VALVE OUTLET
HOT WATER OUTLET

BOILER RETURN
(Bottom Left)

DRAIN VALVE

-6-

PIPING USING SEPARATE CIRCULATOR PUMP (RECOMMENDED)

PIPING USING ZONE VALVE WITH EXISTING HEATING SYSTEM CIRCULATOR

-7-

6. READY-TO-RUN RTR-SERIES
PIPING INSTALLATION
DOMESTIC WATER PIPING

BOILER PIPING

1. Connect the cold water supply to the pipe labeled COLD
WATER.

1. Plumb the BOILER SUPPLY line. The circulator and flow
check are factory installed

2. Connect the HOT WATER piping to the domestic hot water
system.

2. Pipe the BOILER RETURN connection to the boiler return
line.

3. Make an 8-inch “heat trap” on the HOT WATER outlet as
shown in the diagram. This will reduce standby losses from
heat migrating up the piping.

Be sure the return line is NOT
plumbed to the suction side of any
heating circulators. This may require moving the
heating circulator off the boiler tapping on packaged
boilers. Failure to do so will result in overheating and
tank damage when the heating system is in
operation.

4. When all domestic water piping is complete, open the cold
water supply and allow some water to enter the tank. Look
and listen for signs of leaks and repair as necessary before
continuing.
Note: If installing on a city supply, ensure a dedicated
Thermal Expansion tank (Therm-X-Trol® or equivalent) is
used.
5. Install a blowdown tube on the T&P relief valve outlet.
Plumb to within 6 inches above a floor drain or as directed
by plumbing code.

3. After completing the boiler piping, slowly open the boiler fill
valve and pressurize the heat exchanger loop. Check for
leaks and repair as necessary. Proceed to the appropriate
wiring section in this manual.
If installing on city water supply a
properly sized THERM-X-TROL® is
required with the BoilerMate® and should be installed as set
forth in the THERM-X-TROL® product installation manual.
Clearance From Combustible Surfaces
LEFT SIDE . . . . . . . . . . . . . 1”
RIGHT SIDE . . . . . . . . . . . . 1”
TOP . . . . . . . . . . . . . . . . . . 9”

REAR . . . . . . . . . . . . . . . . . 1”
FLOOR . . . . . . . . . . . . . . . . 0”
FRONT . . . . . . . . . . . . . . . . 1”

Recommended Clearance For Servicing
COLD WATER INLET
T&P RELIEF VALVE
OUTLET

LEFT . . . . . . . . . . . . . . . . . 12”
RIGHT . . . . . . . . . . . . . . . . 12”
FRONT . . . . . . . . . . . . . . . . 30”

HOT WATER OUTLET

CIRCULATOR

HEAD ROOM . . . . . . . . . . . 36”
REAR . . . . . . . . . . . . . . . . . 1”

BOILER SUPPLY

BOILER RETURN

TOP VIEW

DRAIN VALVE

SIDE VIEW
-8-

PIPING MODELS WITH PRE-INSTALLED CIRCULATOR W/INTEGRAL FLOW CHECK

-9-

7. WHS PREMIER SERIES
PIPING INSTALLATION
DOMESTIC WATER PIPING

BOILER PIPING

1. Thread the included brass tee onto the pipe marked COLD
WATER.
2. Screw the drain valve into the opposite end of the brass
tee

3. Connect the cold water supply to the remaining port on the
brass tee

2. Pipe the BOILER RETURN connection to the boiler return
line.

4. Thread the included T&P Safety Relief Valve into the offset
3/4” port on the top plate. Install a blowdown tube to within
6 inches of a floor drain or as directed by plumbing code.
5. Connect the center hot water outlet port on the top plate to
the domestic hot water system.

6. Make an 8-inch “heat trap” as shown in the diagram. This
will reduce standby losses from heat migrating up the
piping.

3. Install a weighted flow check on the boiler return line. This
is not necessary on systems utilizing a zone valve to control
the BoilerMate® temperature.

7. When all domestic water piping is complete, open the cold
water supply and allow some water to enter the tank. Look
and listen for signs of leaks and repair as necessary before
continuing.

Note: If installing on a city supply, ensure a dedicated
Thermal Expansion tank (Therm-X-Trol® or equivalent) is
used.

If installing on city water supply a
properly sized THERM-X-TROL® is
required with the BoilerMate® and should be installed as set
forth in the THERM-X-TROL® product installation manual.

Clearance From Combustible Surfaces
LEFT SIDE . . . . . . . . . . . . . 1”
RIGHT SIDE . . . . . . . . . . . . 1”
TOP . . . . . . . . . . . . . . . . . . 9”

Recommended Clearance For Servicing

REAR . . . . . . . . . . . . . . . . . 1” LEFT . . . . . . . . . . . . . . . . . 12”
FLOOR . . . . . . . . . . . . . . . . 0” RIGHT . . . . . . . . . . . . . . . . 12”
FRONT . . . . . . . . . . . . . . . . 1” FRONT . . . . . . . . . . . . . . . . 30”
HOT WATER OUTLET

HEAD ROOM . . . . . . . . . . . 36”
REAR . . . . . . . . . . . . . . . . . 1”

T&P RELIEF VALVE

BOILER RETURN (Top Left)
BOILER SUPPLY (Top Right)

COLD WATER INLET
(Bottom Center)

-10-

PIPING USING SEPARATE CIRCULATOR PUMP (RECOMMENDED)

PIPING USING ZONE VALVE WITH EXISTING HEATING SYSTEM CIRCULATOR

-11-

8. WIRING ALL SMART CONTROL™ MODELS
The Smart Control™ incorporates all the switching and temperature control functions necessary to control the BoilerMate™.
The diagram below shows internal wiring and the associated functions.
After wiring is complete, insert the white thermistor (sensor) plug into the receptacle at the base of the Smart Control™. Select
the plug marked CIRCULATOR or ZONE VALVE based on the application. Zone valves can be slow actuating. Therefore, the
zone valve sensor contains a built-in temperature offset to account for the time it takes the zone valve to fully close. This results
in potable water temperature that is representative of the Smart Control™ temperature set point. This is why it is important
to install the correct sensor into the Smart Control™. See Page 2 for information regarding the selection of a circulator or
zone valve.

Normally Open
Close on call for hot water
Post-Purge function
Pre-Purge function

{

Normally Open
Close on call for hot water

ORANGE
ORANGE

{

Normally Closed
Open on call for hot water
Priority function

BLUE
BLUE

{

VIOLET
VIOLET

Constant 24VAC or 120VAC

{

-12-

WHITE
Power In
BLACK

BOILERMATE®
JUNCTION BOX

ORANGE
ORANGE
BLUE

L8124 A & C
2

BLUE
VIOLET

VIOLET
WHITE
BLACK
(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

BOILERMATE®
CIRCULATOR

ZR
ZC

HONEYWELL L8124 A & C

L8124 B & D
T

BOILERMATE®
JUNCTION BOX
LOW LIMIT/
CIRCULATOR

HIGH
LIMIT

ORANGE
ORANGE

BLUE
BLUE
VIOLET
VIOLET

WHITE
BLACK

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

BOILERMATE®
CIRCULATOR

HONEYWELL L8124 B & D

L1 L2

BOILERMATE®
JUNCTION BOX
ORANGE

L8148A
L1
3

ORANGE
BLUE

BLUE

HIGH
LIMIT

VIOLET
VIOLET

WHITE
BLACK

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

HONEYWELL L8148A
-13-

BOILERMATE®
CIRCULATOR

BOILERMATE®
JUNCTION BOX

L8148J
T
TP

ORANGE
ORANGE

BLUE

HI
LIMIT

BLUE

VIOLET

VIOLET
WHITE
BLACK

C1 C2
B1 B2 B3

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

L1 L2
BOILERMATE®
CIRCULATOR
L1 L2

HONEYWELL L8148 J
WITH MILLIVOLT GAS VALVE

BOILERMATE®
JUNCTION BOX

L8148J
T
TP

ORANGE
ORANGE

BLUE

HI
LIMIT

BLUE

VIOLET

VIOLET
WHITE
BLACK

C1 C2
B1 B2 B3

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

L1 L2
BOILERMATE®
CIRCULATOR
L1 L2

HONEYWELL L8148 J
WITH 24 VOLT GAS VALVE

BOILERMATE®
JUNCTION BOX

8J48A
TV

BLUE

C1
B1

ORANGE
ORANGE

BLUE
VIOLET

VIOLET
WHITE
BLACK

WHITE - RODGERS 8J48A
WITH 24 VOLT GAS VALVE

-14-

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

BOILERMATE®
JUNCTION BOX

8J48A
TV

BLUE

ORANGE
ORANGE

BLUE
VIOLET

VIOLET
WHITE
BLACK
(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

WHITE - RODGERS 8J48A
WITH SELF-GENERATING GAS VALVE

BOILERMATE®
JUNCTION BOX
ORANGE
ORANGE
BLUE

L8124 A & C
1

BLUE

VIOLET
VIOLET
WHITE
BLACK

ZR
ZC

HEATING
CIRCULATOR

BOILERMATE®
CIRCULATOR

PRIORITY WIRING
HONEYWELL L8124 A & C

L8124 B & D
T

T
HIGH
LIMIT

BOILERMATE®
JUNCTION BOX

LOW LIMIT/
CIRCULATOR

ORANGE

ORANGE
BLUE
BLUE
VIOLET
VIOLET

B2
1

B1
2

WHITE
BLACK

C2
HEATING CIRCULATOR

BOILERMATE®
CIRCULATOR
L2 L1
-15-

PRIORITY WIRING
HONEYWELL L8124 B & D

BOILERMATE®
JUNCTION BOX

L8148A
L1

ORANGE

ORANGE
BLUE

HIGH
LIMIT

BLUE
VIOLET

VIOLET

WHITE
BLACK

BOILERMATE®
CIRCULATOR

PRIORITY WIRING
HONEYWELL L8148A

L1 L2
BOILERMATE®
JUNCTION BOX
ORANGE
ORANGE

L8148B
L1

BLUE

BLUE
VIOLET

HIGH
LIMIT

VIOLET

BLACK

WHITE

BOILERMATE®
CIRCULATOR

PRIORITY WIRING
HONEYWELL L8148B

BOILERMATE®
JUNCTION BOX

L8148J
T
TP

ORANGE
ORANGE

HI
LIMIT

BLUE
BLUE

VIOLET

VIOLET
WHITE
BLACK

C1 C2
B1 B2 B3

L1 L2
BOILERMATE®
CIRCULATOR
L1

-16-

PRIORITY WIRING
HONEYWELL L8148 J
WITH 24 VOLT GAS VALVE

BOILERMATE®
JUNCTION BOX

L8148J
T

ORANGE
ORANGE
BLUE
BLUE

HI
LIMIT

VIOLET

VIOLET
WHITE
BLACK

C1 C2
B1 B2 B3

L1 L2
BOILERMATE®
CIRCULATOR

PRIORITY WIRING
HONEYWELL L8148 J
WITH MILLIVOLT GAS VALVE

L1 L2

BOILERMATE®
JUNCTION BOX

8J48A
TV

ORANGE

C1
B3

HEATING
CIRCULATOR

ORANGE
BLUE
BLUE
VIOLET

VIOLET
WHITE
BLACK

PRIORITY WIRING
WHITE-RODGERS 8J48A
WITH 24VOLT GAS VALVE

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

BOILERMATE®
CIRCULATOR

BOILERMATE®
JUNCTION BOX

8J48A
TV

ORANGE

HEATING
CIRCULATOR

ORANGE
BLUE
BLUE
VIOLET
VIOLET
WHITE
BLACK

PRIORITY WIRING
WHITE-RODGERS 8J48A
WITH SELF-GENERATING GAS VALVE

-17-

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

BOILERMATE®
CIRCULATOR

Typical Multi-Zone Relay
Utilizing Post-Purge Feature

ORANGE
ORANGE
BLUE
BLUE

Thermostat
Inputs

VIOLET
VIOLET

Priority or
DHW Zone

BLACK
WHITE

Zone Outputs
X

Smart Control™
L1 L2
120V
Supply

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

BoilerMate®
Circulator

Boiler Aquastat

Typical Multi-Zone Relay
24V without Post-Purge Feature

ORANGE
ORANGE
BLUE
BLUE

Thermostat
Inputs

VIOLET
VIOLET
Priority or
DHW Zone
24V
Supply

Zone Outputs

Smart Control™
(PLACE A WIRE NUT OVER
EACH WIRE NOT USED)

X X

T T
Boiler Aquastat

BLACK
WHITE

BoilerMate®
Circulator

-18-

WATER SENSOR INSTALLATION (IF EQUIPPED)
The Smart Control™ features an error code designed to alert the user to the presence of water on the floor. This is useful to
warn of a leaking boiler, water heater, etc., or to alert the owner to a leak in the basement. If equipped with the optional water
sensor, follow the installation instructions below:

Water
Sensor
Plug
1. If the sensor will be used to detect a water heater leak, the proper placement is in a drip pan as required in the warning
section of this manual. This will both protect the surrounding surfaces from water damage and provide sufficient water depth
to activate the alarm. The sensor will function with either side placed toward the floor.
2. If the sensor will be used to detect another potential leak source, such as basement flooding, the sensor must be placed
on a flat section of floor in an area where water will first collect. If the level cannot reach 1/32”, the alarm feature may not
function. Do not place in a high-traffic area where the sensor could be stepped on or moved. The sensor will function with
either side placed toward the floor.
3.

After placing the sensor in the appropriate location, plug the water sensor connector into the Smart Control™.

4. Upon wiring the Smart Control™, test the sensor by either immersing it in water or inserting a coin between the two
electrodes. The Smart Control should display Er4 and sound an alarm. The error and alarm should disappear when the sensor
is dried or the coin is removed. Perform this test during the annual inspection of the BoilerMate®, or more frequently if installed
in an area known to flood.
5.

This sensor should not be the primary means of leak detection.

U.S. Patent Pending 11/948,493 and other patents pending.

-19-

9. WIRING ALL DIAL CONTROL MODELS
(EXCEPT RTR MODELS)
Dial Control models utilize a standard dry-contact aquastat with capillary temperature sensor. The dial control contains a
make-and-break switch and is suitable for 24V or 120V, 25A Max.

CAPILLARY TUBE

SENSOR BULB

SHAFT

WIRE LEADS

To wire Dial Control models, select the appropriate diagram from the following pages. If a suitable diagram is not available for
your application, please contact AMTROL Tech Support at (401)535-1216. Always disconnect power before wiring the control.
Ensure that the proper conduit and connectors are used per your local code. In lieu of local code, the National Electric Code
should be followed.

SEPARATE CIRCULATOR

-20-

ZONE VALVES - SCHEMATIC 3

3-WIRE ZONE VALVES

PRIORITY W/CIRCULATORS - SCHEMATIC 4

Typical Multi-Zone Relay

Thermostat
Inputs
Priority or
DHW Zone
Zone Outputs
X

Boiler Aquastat

BoilerMate®
Circulator
-21-

BoilerMate® Thermostat

BOILER CONTROL - SCHEMATIC 5

HONEYWELL L8148E

4 WIRE ZONE VALVE
"T"

(ON BOILER CONTROL)

"T"

SMART CONTROL™
JUNCTION BOX
ORANGE
ORANGE

END SWITCH
40VA
TRANSFORMER

MOTOR

BLUE
BLUE
VIOLET
VIOLET

24 VOLT

BLACK
WHITE

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED IN
THE AMTROL BOILER MATE®
JUNCTION BOX.)

L1
L2

NOTE: TAKE L1 AND L2 OFF THE BOILER CONTROL

3 WIRE ZONE VALVE
L2

SMART CONTROL™
JUNCTION BOX

110v
1

ORANGE
ORANGE

40VA
TRANSFORMER

BLUE
BLUE
VIOLET
VIOLET

24 VOLT

"T"
"T"

BLACK
WHITE

(ON BOILER
CONTROL)

(PLACE A WIRE NUT OVER
EACH WIRE NOT USED IN
THE AMTROL BOILER MATE®
JUNCTION BOX.)

L1
L2

NOTE: TAKE L1 AND L2 OFF THE BOILER CONTROL

-22-

10. WIRING ALL READY-TO-RUN (RTR) MODELS
Ready-To-Run models include a circulator with built-in priority zoning relay. The aquastat is pre-wired and controls the
circulator. Line voltage must be supplied and a signal wire must be run to fire the boiler.

PR
IN

PR
OUT LIVE NEUT

LINE IN
LINE OUT
CANCELS ON
CALL FOR DHW

DHW AQUASTAT
FACTORY WIRED
DRY CONTACT
TO BOILER OR
EXTERNAL RELAY

CIRCULATOR RELAY OPERATION

To wire RTR models, select the appropriate diagram from the following pages. If a suitable diagram is not available for your
application, please contact AMTROL Tech Support at (401)535-1216. Always disconnect power before wiring the unit. Ensure
that the proper conduit and connections are used per your local code. In lieu of local code, the National Electric Code should
be followed.

CIRCULATOR RELAY BOX
PR
IN
1

PR
OUT LIVE NEUT

L2
L1

Indirect
Aquastat
L1

HIGH
LIMIT
INPUT

HONEYWELL L8148A OR SIMILAR W/120V HIGH LIMIT

-23-

CIRCULATOR RELAY BOX
PR
IN
1

CIRCULATOR RELAY BOX

PR
OUT LIVE NEUT

PR
IN

PR
OUT LIVE NEUT

L2
L1

Indirect
Aquastat
L1

L2
Indirect
Aquastat

3
REMOVE JUMPER
BETWEEN 1 & 3
B2

HEATING
CIRCULATOR

L1 L2

HONEYWELL L8148J W/MILLIVOLT GAS VALVE

HONEYWELL L8148A OR SIMILAR W/PRIORITY

CIRCULATOR RELAY BOX
PR
IN
1

CIRCULATOR RELAY BOX

PR
OUT LIVE NEUT

PR
IN

PR
OUT LIVE NEUT

L2
L1

Indirect
Aquastat

L2
L1

Indirect
Aquastat

THERMOSTATS

T T

T T
PRIORITY
ZONE
MULTI-ZONE
CONTROL

W
B
ZONE OUTPUTS
L1

TYPICAL MULTI-ZONE CONTROL

WHITE RODGERS 8J48A W/24V GAS VALVE

-24-

11. STARTUP PROCEDURE FOR ALL MODELS
1. PURGE HEAT EXCHANGER: The heat exchanger
should be free of large air pockets to allow the
circulator to operate properly. Using the diagram
below as a guide, isolate the boiler return line and flush
the loop until large air pockets are purged. After this,
the air elimination equipment will collect smaller air
bubbles to maximize efficiency.

If not, check wiring and consult the troubleshooting
section in this manual.
4. CHECK OPERATION: The BoilerMate® will begin to
heat. Depending upon the size of the BoilerMate,
output of the boiler and the space heating load, the
unit should typically reach set temperature within 15
to 60 minutes. If heating does not occur, consult the
troubleshooting section in this manual. Note: Large
heaters coupled with small boilers may exceed this
time period upon initial startup.

2. FILL TANK: Open the hot water fixture furthest from
the heater. Open the cold water supply and allow the
water to run until air stops emerging. Until all air is
purged from the hot water system, air pockets may
appear at any hot water fixture. This is considered
normal and will clear as hot water is used.

5. SET TEMPERATURE: The BoilerMate® control should
be set to the minimum temperature consistent with the
user’s needs. This maximizes efficiency and reduces
scald potential.

3. START HEATER: Turn power on to the unit. Smart
Control™ models come pre-set at 120°F for safety. Dial
units should have the knob rotated to the 120°F mark.
The circulator and boiler should start momentarily.

-25-

12. SETTING THE SMART CONTROL™
The Smart Control™ incorporates multiple features that increase hot water performance and efficiency.
All settings are accessed via the MODE button. To change any setting, simply hold the MODE button
then tap to cycle through the settings as outlined below.
GREEN LIGHT - CIRCULATOR INDICATOR

MODE SWITCH

READOUT
DISPLAY

• When power is applied to the unit, the display will show the setpoint temperature (default 120°F).
• Pressing and holding the MODE pushbutton once for 6 seconds will display
then 120°F. This is the water temperature
setpoint. To raise or lower this temperature setpoint, press the s or t pushbutton. The temperature can be set between 90°F
and 150°F. To shut the unit down, scroll below 90°F until 0°F is displayed. Shutting the unit down is beneficial if the water heater
will not be used for an extended period of time.
WARNING: Temperature settings above 120°F can create a scald hazard.
• Pressing the MODE pushbutton a second time will cause
to be displayed, and releasing the MODE pushbutton will cause 10°F
to be displayed. This is the differential setpoint, a setpoint that determines how many degrees the water temperature is allowed
to drop before the water heater activates. To change between the available 10°F and 5°F settings, press and release the s or t
pushbutton.
• Pressing the MODE pushbutton a third time will cause
to be displayed, and releasing the MODE pushbutton will cause 0°F
to be displayed. This is the post purge setpoint, a setpoint that allows the boiler to be shut off when the actual water temperature
is a certain number of degrees below the setpoint temperature. Since the circulator continues to run, the post purge feature will
remove excess heat from the boiler after the boiler shuts off. To change the post purge setpoint, press and release the s or t
pushbutton to select 0°F, 4°F, or 8°F below setpoint temperature. NOTE: If the differential is set to 5°F, then the post purge setting
will not be available and will automatically be set to 0°F. NOTE: When using the BoilerMate® on a zone valve application, the post
purge feature will not function.
• Pressing the MODE pushbutton a fourth time will cause Pri to be displayed, and releasing the MODE pushbutton will cause ‘y’
to be displayed. This is called the priority setting, a setting that allows the domestic hot water to reach the setpoint temperature
before spatial heating is allowed to resume. To disable the ‘priority’ feature, press and release the s or t pushbutton until ‘n’ is
displayed.
• Pressing the MODE pushbutton a fifth time will cause
to be displayed, and releasing the MODE pushbutton will cause ‘41’ to
be displayed. This is the tank volume in gallons. To change this volume, press and release the s or t pushbutton to select the
proper tank size (26, 41, 60, 80, or 120 gallons).
• Pressing the MODE pushbutton a sixth time will cause
to be displayed, and releasing the MODE pushbutton will cause a
number to be displayed. This is a BTU heat transfer rate estimate in MBH. This is a diagnostic readout and cannot be changed.
• NOTE: Any changes made to the above settings will take effect after 10 seconds. This will be acknowledged by a display of
. Thereafter, these changes will be the new control settings even in the event of a power outage.
• An approximation of the actual domestic water temperature in the tank can be displayed in °F by pressing the s pushbutton.
• One or more error messages will be displayed if abnormal operation occurs, and an audible alarm will sound for most error
messages. The audible alarm can be silenced by pressing the t pushbutton. An
message indicates an unplugged or
damaged thermistor (temperature sensor). Check and replace as necessary. An
message appears when the stored water
temperature exceeds 155°F. Contact your service person to correct the problem. An Er3 message indicates that the actual
domestic water temperature did not reach the setpoint temperature after one hour of attempted heating. Contact your service
person to correct the problem. For models equipped with a water sensor, an Er4 message indicates that a water puddle has been
detected. Contact your service person to correct the problem.
Note: Smart Control™ is to be used for indoor applications only. Do not operate the Smart Control™ unit outside

of the following ranges:
• Ambient temperature from 38°F to 125°F.
• Relative humidity ranging from 20% to 90% (non-condensing).
• Boiler load rating up to 15A resistive, 1/4hp inductive @120VAC.
• Circulator load rating up to 15A resistive, 1/4hp inductive @120VAC.
• Space heating load rating up to 8A @ 120VAC.
Note: For models equipped with a water sensor, the water sensor should be placed flat on the floor in a low-traffic area. On a regular
basis, verify that the water sensor is functioning properly by placing the orange puck in a water puddle or inserting a coin
between the two electrodes and listening for an audible alarm. This water sensor should not be the primary means of leak
detection. See water sensor installation page for more details.
Note: If setpoints were being adjusted when a power outage occurred, then recheck all set points after power has been restored.
-26-

13. TROUBLESHOOTING
SOLUTION

PROBLEM

No hot water

1.
2.
3.
4.
5.

No power to unit
Air in heat exchanger loop
Faulty circulator or zone valve
Faulty BoilerMate™ thermostat
Faulty Smart Control™

6. Boiler inoperable

Insufficient hot
water

1.
2.
3.
4.

Demand exceeds capacity
Temperature too low
Boiler lacks sufficient output
Fouled heat exchanger

5. Insufficient heat exchanger flow

1. Improper plumbing

Water too hot and/
or ER2 message on
Smart Control™

Noise from
BoilerMate®

2.
3.
4.
5.

Temperature set too high
Temperature sensor not fully inserted
Stuck zone valve
Flow check valve stuck open

1. Air in boiler loop
2. Faulty circulator pump
3. Thermal expansion
4. Normal noise during initial fill
No thermal expansion tank
Thermal expansion tank set improperly
City pressure too high
System over temperature
Faulty relief valve

1. Check circuit breaker, boiler emergency switch and boiler reset switch
2. Purge air. Ensure circulator is on Boiler Supply. Check air vents
3. Check circulator and zone valve. Repair or replace if necessary
4. Check continuity while rotating knob. Circuit should open and close.
5. If blank, check power. Check continuity across two orange and two blue leads
while green light is on. If none, open control and replace fuses or replace control.
6. Check boiler system. Boiler must operate to generate hot water
1. Check sizing based on household size and boiler output
2. Increase temperature setpoint
3. Wire for priority. If problem persists add storage or increase tank size.
4. Check Boiler Supply/Boiler Return during cold startup. If difference is less than
20°F, clean heat exchanger as outlined below. Install water treatment equipment
to prevent recurrence.
5. Check for undersized or faulty circulator, stuck or undersized zone valve. Ensure
all shutoff valves are open. Check for stuck flow check valve. Purge boiler loop
to remove air.
1. If Boiler Return is plumbed to the suction-side of a heating circulator, overheating will occur when the home’s heat is on. Fix plumbing.
2. Reduce temperature setpoint
3. Re-insert thermistor wire or temperature sensor.
4. Repair or replace
5. Clean, repair or replace
1. Purge boiler loop. Check air elimination equipment.
2. Repair or replace pump
3. Ensure the proper Therm-X-Trol® or equivalent thermal expansion tank is
installed and adjusted properly
4. When first pressurized, a creaking or hissing sound is normal. After pressurizing, the noise should stop. Always check for leaks.

Relief valve
dripping or opening

1.
2.
3.
4.
5.

ER1 message on
Smart Control™

1. Temperature sensor unplugged
2. Temperature sensor cut or faulty
3. Water in therm-well

1. Sensor is unplugged from factory. Plug into Smart Control™ receptacle
2. Replace sensor wire (thermistor)
3. Replace therm-well

1. Poor water quality

1. Have water tested for contaminants. Typical problems are:
Blue/green color = copper discoloration due to low pH
Black staining/sulfur odor = hydrogen sulfide
White deposits = hard water
Red staining = high iron levels
2. Install sediment filter, purge unit more often to avoid future problems

Discolored water at
faucet
2. Sediment or suspended particles

Boiler will not
operate when
calling for hot
water

1. Improper or loose wiring
2. Boiler high limit has been reached
3. Fuse blown in Smart Control™
4. Post Purge (POS) set too high
5. Problem with boiler system

Circulator or zone
valve will not
operate when
calling for hot
water

1. Improper or loose wiring
2. Pre Purge (PRE) set too high
3. Fuse blown in Smart Control™
4. Faulty circulator pump

1. Install the proper Therm-X-Trol® or equivalent thermal expansion tank
2. Ensure precharge air pressure matches static water pressure
3. Install a Pressure Reducing Valve (PRV) if city pressure is over 80psi
4. Determine cause of over temperature condition and correct problem
5. Replace relief valve

1. Check connections against wiring diagrams in this manual
2. Boiler will periodically cycle on and off during operation
3. Remove 4 screws inside the Smart Control™ wiring box. Replace glass fuse(s)
with those of the same rating
4. Post Purge shuts the boiler off prior to reaching domestic setpoint. If set too
high, the boiler may not have enough energy to raise the water temperature to
setpoint. Reduce POS or set to 0 if the problem persists
5. Have boiler diagnosed for proper operation
1. Check connections against wiring diagrams in this manual
2. PRE setting delays circulator startup. This is not normally needed in residential
applications. Reduce PRE or set to 0 if problem persists
3. Remove 4 screws inside the Smart Control™ wiring box. Replace glass fuse(s)
with those of the amp same rating
4. Repair or replace pump

-27-

14. REPLACEMENT PARTS

WH-7, 41
WHS 60 & 80
and 9 Series TD-7 Series
TD-7 RTR TD-80 Series Residential

WHS 120 WHS 60 & 80
Residential Commercial

WHS 120
Commercial

Single Wall Heat Exchanger
w/Gasket and Nuts

2700-5000

2700-5005

2700-5007

2700-5008

2775-82

2775-81

2700-5001

Double Wall Heat Exchanger
w/Gasket & Nuts

2700-5002

2700-5006

N/A

2775-83

2775-84

Commercial Heat Exchanger
w/Gasket & Nuts

2700-5001

N/A

See Above

Top Outlet Tee
w/O-Ring

2700-635

N/A

Flange Gasket:
Bottom & Top

2704-403

Thermo-Well
Assembly

2700-924 2700-924(exc DW) 2700-924

2700-1167

2700-924

Top Outlet O-Ring or
Bottom Drain O-Ring

2500-178

N/A

Smart Control™

2704A233

N/A

Sensor (thermistor)
wire

2704-259

N/A

Dial Aquastat
(residential)

2704-093

N/A

Dial Aquastat
(commercial)

N/A

2775-454

2704-227

N/A

2704-227

2775-389

Conversion Kit:
Dial Aquastat
to Smart Control™

Conversion Kit:
Smart Control™ to
2704-392
2704-392
N/A
2704-392
2775-455
2775-455
Dial Aquastat
Circulator Pump
Water Sensor

2775-455
2775-455
plus 2775-454 plus 2775-454

245-58

245-62

245-58

N/A

2704-495

245-58

245-62

245-58

N/A

To obtain replacement parts, contact the installer or place of purchase. Technical support is available by calling
AMTROL at (401) 535-1216.

-28-

15. CLEANING THE BOILERMATE®
HEAT EXCHANGER COIL
A diminished temperature difference between
the boiler water entering and leaving the heat
exchanger coil may indicate heat exchanger scale
buildup. Water treatment equipment and proper
maintenance will help to avoid this problem. To
clean a scaled heat exchanger coil proceed as
follows:
1. Shut off the cold water supply to the
BoilerMate®.
2. Make a note of the temperature control setting
on the BoilerMate®, then turn the unit off.
3. Relieve the water pressure in the tank by
opening a hot water faucet. This will reduce the
risk of scalding injury.
4. Remove the relief valve from the top of the
BoilerMate®, taking care to avoid contact with
the hot water, which may drain out of the
plumbing.
5. Drain the BoilerMate® until the water within the
tank is even with the top of the heat exchanger
- approximately 15 gallons for 41-gallons units
and 5 gallons for 26-gallon units.

7. Set the temperature control to its highest setting and
operate the unit until the control is satisfied. Note:
Boiler may cycle on its high limit several times during
this period. If the tank temperature setting has not been
satisfied after 45 minutes of boiler operation, turn the
BoilerMate® control off to stop boiler operation.
8. Allow heated solution to set in tank for 30 minutes,
then drain tank completely using fitting and hose, as
required.
9. Fill water tank with fresh, cold, conditioned water and
drained completely at least two times or until drained
water runs clear.
10. Reinstall the safety relief valve.
11. Open the cold water supply and fill the tank with water.
Purge plumbing by operating all hot and cold water
fixtures in the building.
12. Return the control to the setting noted in Step 2 and
verify that the unit is functioning properly.

Do not over-drain the tank.
Improper thermostatic control
could result during Step 6 and lead to damage to
the BoilerMate®.
6. Using a funnel, pour one gallon of nontoxic commercial phosphoric acid solution
(commercial icemaking cleaning solution) into
the water tank through the top opening. Be
sure that the manufacturer’s directions and
warnings are followed.

-29-

As an alternative to the above, the teat exchange may
be removed from the BoilerMate® and cleaned. A new
gasket must be installed whenever the heat exchanger
is removed.

15. GENERAL SAFETY INFORMATION
SCALDING HAZARD. If the water
temperature is over 120°F, household
members can suffer serious or fatal scalding and painful and
permanent injury. • The Consumer
Products Safety
Commission recommends an initial setting of 120°F, but notes
a slower response time of infants, aged, disabled and other
persons increases the scalding hazard and may require lower
settings. • Always check the water temperature before use,
including washing, bathing or showering. • Temperature
limiting valves are available from your plumbing supplier. A
check valve must be installed in the boiler return line to prevent
gravity flow through the heat exchanger. This can cause
overheating and result in serious or fatal scalding.
SCALDING HAZARD. If the thermostat
is not working properly or if this product
is not installed in accordance with the manual, water temperature
can reach excessive levels that may cause serious or fatal
scalding. After installation and any servicing of the unit, verify
that the thermostat is working and firmly inserted in the
thermostat well by following the thermostat testing instructions
in the manual.
Failure to use the correct replacement
parts may make your product unsafe.
CALIFORNIA PROPOSITION 65
WARNING! WARNING: This product
contains a chemical known by the State
of California to cause cancer and birth defects or other
reproductive harm. (California Installer/Contractor - California
law requires that this notice be given to consumer/end user of
this product.) For more information: www.amtrol.com/
prop65
In limited circumstances, space heating
can be lost in the home with unit
utilizing priority mode. Any demand for space heating is
postponed until the Boiler Mate® has reached its set
temperature. This delay in supplying the space heating zones
is usually not noticed by the inhabitants of the living spaces.
However, in the event of certain malfunctions such as circulator
or thermostat failure, space heating could be delayed
indefinitely. If undetected and uncorrected, freezing damage
to piping could result.
If a steel hydropneumatic tank is in
place,
AMTROL ®
recommends
replacing it with a properly sized EXTROL® expansion tank.
Otherwise, significant heat transfer problems can occur by
causing air to be trapped in the heat exchanger. If the boiler
system has an EXTROL® or Radiant EXTROL® expansion tank
and the boiler temperatures are being changed, resize the
EXTROL® or Radiant EXTROL® expansion tank.
If installing on city water supply a
properly sized THERM-X-TROL® is
required with the BoilerMate® and should be installed as set
forth in the THERM-X-TROL® product installation manual.
Contact your water supplier or local plumbing inspector for
additional information.
Prevent pressure build-up in any existing
internal tankless coil. Do not plug
incoming or outgoing tappings in the internal tankless coil
plate. Leave the coil in the boiler and leave system connections
open, to prevent pressure build-up.
Electrocution hazard. The BoilerMate®
must be electrically grounded. Electrical
supply must come from the boiler side of boiler’s emergency
shut-off switch in order to prevent unsafe boiler operation.

Note: Inspect for shipping damage and notify freight carrier
or store where purchased immediately if damage present.
To avoid risk of personal injury and property damage, if the
product appears to be malfunctioning or shows signs of
corrosion, call a qualified professional immediately. Current
copies of the Product manual can be viewed at www.amtrol.
com. Use proper safety equipment when installing.
EXPLOSION HAZARD. The pressure of
the heat transfer medium must be limited
to a maximum of 30 psig by an approved safety or relief valve
on your boiler. The BoilerMate® pressure must be limited to
150 psig maximum by the installation of a temperature and
pressure relief valve (included). The relief tube must be
plumbed to a suitable drain per code. No reducing coupling or
other restriction may be placed in this line.
This Product, like most Products under
pressure, may over time corrode,
weaken and burst or explode, causing serious or fatal injury,
leaking or flooding and/or property damage. To minimize risk,
a licensed professional must install and periodically inspect
and service the Product. A drip pan connected to an adequate
drain must be installed if leaking or flooding could cause
property damage. Do not locate in an area where leaking could
cause property damage.
EXPLOSION OR RUPTURE HAZARD.
A relief valve must be installed to
prevent pressure in excess of local code requirement or
maximum working pressure designated in the Product Manual,
whichever is less. Do not expose Product to freezing
temperatures or temperatures in excess of the maximum rated
operating temperature.
If not installed by the boiler manufacturer,
install a low water cut-off or pressure
reducing valve on your boiler so that leaking will not result in a
dry boiler which if the boiler continues to fire, will cause an
explosion hazard.
This unit must be installed as a separate
heating zone. Do not connect this unit to
an existing heating zone or feed boiler water directly through
the coil as dangerous over-heating will result.
Do not drain this appliance before
shutting off the supply valve and
opening the relief valve or another downstream fixture, as it will
damage this unit. A vacuum breaker should be installed to
avoid damaging the liner. Damage to the unit and leakage can
occur if a vacuum breaker is not installed.
USE
GLYCOL
ONLY
WITH
DOUBLE-WALLED
HEAT
EXCHANGER MODELS. Avoid risk of ingesting a toxic glycol
fluid. The heat transfer medium should be water. If glycol must
be used, it should only be used with double-walled heat
exchangers and closely moitored for leakage.

Chlorine Aggressive Water: The water
quality can significantly influence the
life of this Product. You should test for corrosive elements,
acidity, total solids and other relevant contaminants, including
chlorine and treat your water appropriately to insure satisfactory
performance and prevent premature failure.
-30-

-31-

Part #: 9040-586 (07/08)

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Amtrol Boilermate Rtr Installation Manual 9040 586 07_08 Indirect IO

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