HydroTherm EW2-1203, Installation, Operation & Maintanance Manual

Page: 8 / 24

8
STEP 3: VENTING THE BOILER
DANGER: Draft hood and vent outlet must not be altered, as proper operation would be jeopardized; flame
rollout, fire or carbon monoxide poisoning will result.
PROCEDURE B: Install vent damper. (For French version, see Appendix A at rear of manual.)
FLOW DIRECTION
ARROW POINTS UP
MOUNT
VENT DAMPER
OVER
DRAFTHOOD
MAKE SURE
MOTOR IS
LOCATED
ON LEFT SIDE
1. Mount damper on top of draft hood.
FIGURE 1.12
ATTACH LOWER
PORTION OF
VENT DAMPER
TO DRAFTHOOD
WITH 1/2" OR
SHORTER SCREWS
OR POP RIVETS
2. Secure damper to draft hood.
FIGURE 1.13
PLUG INTO MOLEX
RECEPTACLE ON FRONT
OF BOILER
PLUG INTO MOLEX
RECEPTACLE INSIDE
DAMPER MOTOR
VENT
DAMPER
WIRE
HARNESS
3. Connect wire harness.
FIGURE 1.14
DANGER: Only the boiler may be served by the vent damper. Do not use it to vent an additional appliance;
this will cause fire or carbon monoxide poisoning.
PROCEDURE A: Mount draft hood and spill switch
on boiler.
1. Install draft hood on boiler. If draft hood shroud has
a hole near the relief opening, mount draft hood so
hole faces to the front of the boiler.
2. EW boilers are equipped with factory-mounted spill
switch harness/mounting bracket assembly; spill
switch is provided in bag on boiler front.
3. Install mounting bracket on outside surface of draft
hood shroud with the screws provided (HARNESS
MUST BE ON OUTSIDE OF SHROUD). Install spill
switch in hole in shroud (on outside surface) with the
screws provided, Figure 1.11.
4. Plug wiring leads from harness/bracket assembly
onto flat terminals on spill switch.
INSTALL
SWITCH
IN OPENING
ON DRAFTHOOD
CONNECT
WIRE
LEADS
INSTALL
MOUNTING
BRACKET
ON DRAFTHOOD
NOTE: Boiler will not operate unless wiring leads
to spill switch are connected.
NOTE: Additional venting and chimney requirements are provided on page 8.
➤
➤
FIGURE 1.11