Page 14
12821-2-0903
DRB-1 For Vented Room Heaters
Models
RH-25-(1, 2, 4, 5, 6) and RH-35-(1, 2, 4, 5, 6)
Direct Vent Wall Furnaces DV-25-(1, 2)SG and DV-35-(1, 2)SG
Installing Optional DRB-1 Blower
1.
For RH-25-(1, 2, 4, 5, 6) and RH-35-(1, 2, 4, 5, 6),
remove casing front.
1.
For DV-25-(1, 2)SG and DV-35-(1, 2)SG, remove casing
front and heat shield.
2.
When facing appliance, insert blower assembly into the
left section of the casing (adjacent to the combustion
chamber).
3.
For RH-25-(1, 2, 4, 5, 6) and RH-35-(1, 2, 4, 5, 6), route
cord set through opening in casing back. The opening in
casing back is located adjacent to gas control.
3.
For DV-25-(1, 2)SG and DV-35-(1, 2)SG, route cord set
through opening in casing bottom. The opening in casing
bottom is located beneath gas control.
4.
Align the (2) screw holes on the inner side panel and the
(2) screw holes on casing back with the (4) clearance holes
on the blower assembly. Attach blower assembly to the
casing back and inner side panel with (4) #10 x 1/2"
(13mm) screws provided. The blower assembly must be
attached first to the casing back and then to the casing side
panel.
5.
For RH-25-(1, 2, 4, 5, 6) and RH-35-(1, 2, 4, 5, 6),
replace casing front.
5.
For DV-25-(1, 2)SG and DV-35-(1, 2)SG, replace heat
shield and casing front.
Attention: Wiring harness on blower is factory assembled and
installed. If wiring harness becomes disassembled use the
following steps to reassemble the wiring harness.
1.
Attach (1) pin terminal from black (hot) wire, smooth
insulation on cord set to (1) socket terminal on fan control
assembly.
2.
Attach (1) pin terminal from black (neutral) wire, ribbed
insulation on cord set to (1) socket terminal from white
(neutral) wire on motor.
3.
Attach (1) pin terminal on fan control assembly to (1)
socket terminal from black (hot) wire on motor.
4.
Attach green ground wire beneath one of the #10 x 1/2"
(13mm) screws on the blower housing.
Fan Control
The automatic fan control is located in the switch box. The
switch box is attached to the front of the blower assembly. The
switch box is adjacent to the combustion chamber. The fan
control is a non-adjustable automatic type. The fan control
will require between 5 and 10 minutes of main burner opera-
tion before the fan control “closes” and activates the blower.
The blower will continue to run between 5 and 10 minutes after
the main burner shuts off, before the fan control “opens” and
deactivates the blower.
OPTIONAL BLOWER INSTALLATION INSTRUCTIONS