DHW Energy Saver Installation and Configuration Manual
5
HT# 059106-00C
Boiler or Direct/Indirect Water Heater Wiring
• The DHW Energy Saver can control a single boiler. It turns on the
boiler/water heater whenever the supply temperature drops below the
Supply Set Point less the differential.
• Just wire terminal 6 and 7 to the boiler TT terminals.
• Heat-Timer recommends the installation of a bypass switch for
maintenance and manual operation of the boiler/water heater.
• Make sure to set the boiler limits higher than the DHW Energy Saver
Supply Set Point.
DHW Energy Saver
Boiler
Pump
6
7
8
9
COM
3
4
5
A GND B
16VAC
1
2
~ ~
TT
Boiler/Water
Heater
Bypass
Switch
(Optional)
Domestic Hot Water Circulating Pump Wiring
• When the DHW Return is activated, the DHW Energy Saver will
energize the DHW circulating pump relay whenever the return
temperature drops below the Return Set Point less the differential
• The DHW Energy Saver is equipped with a circulating pump relay
output. The relay can operate up to
⅛
HP pump at 120 VAC.
• The Pump output relay does not source any power. A separate power
source is required for the pump.
• Heat-Timer recommends the installation of a bypass switch for
maintenance and manual operation of the pump.
DHW Energy Saver
Boiler
Pump
6
7
8
9
COM
3
4
5
A GND B
16VAC
1
2
~ ~
DHW
Pump
L N
Bypass
Switch
(Optional)
Temperature Sensor Wiring
• Only use a Standard Brass Tube sensor provided (HT #904250-00).
• The sensor wires can be extended to 500 Ft by splicing it to
2-conductor shielded cable (#18/2 Shielded) (HT# 703001-01).
• Connect the shield at the Platinum control circled terminal. The shield
MUST be cut at the sensor end.
• The sensors must be inserted in ⅜”ID NPT well (HT# 904011-00 or
equivalent).
AUX
TEMP 0
AUX
TEMP 1
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
AUX
TEMP 2
A13
A14
A15
A16
A17
A18
NETWORK
PROVE
SHUTDOWN
OUT
TEMP
T
T
T
T
PRESS
4-20 mA
S
+
S
Shield
Supply Sensor
Shield
Return Sensor
Platinum Control
Supply Temperature Sensor
• The Supply Temperature Sensor is required to be connected to the
Platinum Aux Temp 0 input terminals for the DHW Energy Saver to
control the boiler/water heater relay.
• The Supply sensor must be installed in any of the boiler or water
heater aquastat fittings or no more than 10 Ft past the outlet of the
boiler/water heater, before any takeoffs.
Return Temperature Sensor
• The return Temperature Sensor is included but optional. It should be
connected to the Platinum Aux Temp 1 input terminals for the DHW
Energy Saver to control the Pump relay.
• The Return sensor should be installed less than 3 feet from the return
circulator on the return line.
