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Installing Optional DRB-1 Blower
1. For RH-25-(1, 2, 4) and RH-35-(1, 2, 4), 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) and RH-35-(1, 2, 4), 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) (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) and RH-35-(1, 2, 4), 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.
R-2070
OPTIONAL BLOWER DRB-1
Vented Room Heaters RH-25-(1, 2, 4) and RH-35-(1, 2, 4)
Direct Vent Wall Furnaces DV-25-(1, 2)SG and DV-35-(1, 2)SG
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 operation 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.
Wiring
The appliance, when installed, must be electrically grounded in accordance
with local codes or, in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70 or Canadian Electrical Code, CSA
C22.1, if an external electrical source is utilized. This appliance is
equipped with a three-prong [grounding] plug for your protection
against shock hazard and should be plugged directly into a
properly grounded three-prong receptacle. Do not cut or remove
the grounding prong from this plug. For an ungrounded receptacle,
an adapter, which has two prongs and a wire for grounding, can be
purchased, plugged into the ungrounded receptacle and its wire
connected to the receptacle mounting screws.
completing the ground, the appliance cord plug can be plugged into
the adapter and be electrically grounded.
CAUTION: Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous operation.
Verify proper operation after servicing.
WARNING:
Unplugging of blower accessory will not stop the heater from
cycling. To shut heater off: Turn temperature dial or
thermostat to lowest setting. Turn knob on gas control to
"OFF", depressing slightly. Do not force.
With this wire
Page 11
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