American Standard PFWF071A93ABA Installation Manual page 57

Boiler Reset Option - Field Wiring
for Field Supplied Boiler Temperature
Reset Controls (to Decrease Boiler Water
Temperature with Increasing Outdoor
Temperature)
120 Vac Power
(Field Wiring)
G
L1 N
(HV)
1 2 3
4
L N
POWER
Contacts from Outdoor
Reset control
(Field Supplied)
Boiler Reset Control (Field Supplied)
Circ Pump
(Field Supplied)
L1
N
8
5 6 7 9 10 11
L N
J2
LWCO PUMP
(ORANGE)
J1*
J2*
Boiler Reset Configuration
NOTE: This Boiler Reset option may be
used in combination with any of the other
system configuration options and jumper
arrangements shown in this document.
1. Use field supplied boiler reset control
with water temperature sensor and
outdoor temperature sensor. Install
according to manufacturer's instructions.
2. Remove black factory jumper from
boiler terminals 16 and 17.
3. Connect N.O. contact from reset control
across terminals 16 and 17 to enable burner
operation based on reset control curve.
4. Adjust supply water thermostat (SWT)
to its maximum setting.
G
13 14 15 16 17 18
12
Existing Factory
Jumper (Black)
Removed
21 22 24
19 20 23
J5
J4
T T
(YELLOW)
(BLUE)
J4*
J5*
Room Thermostat
(Field Supplied)
* Jumper may or may not be in
place depending on settings of
pump, burner and LWCO.
18-CG03D1-4
(LV)
57