Wm97+ Boiler With Companion Water Heater (Cwh); Wm97+ Boiler; Companion Water Heater (Cwh) - Weil-McLain WM97+ Product Manual

CWH
companion water heater
WM97+ Boiler with Companion Water Heater
WM97+
Boiler
(Model 70/110 shown)
WM97+
Companion
Water Heater
(Shown with typical
external pipe routing —
pipes can be routed out
either side or both sides)
Part number 635-500-156/0113
— Product Manual

WM97+ Boiler

Installation summary
Follow the boiler manual, this manual, and all
applicable codes. Installation consists of the
following:
• Mount boiler on the wall.
• Mount boiler at height shown in the boiler
manual and make sure clearance is provided
on right or left side for piping as directed.
• Install gas piping, condensate trap and con-
densate piping, positioned to route out the
side opening(s) in the piping access panel.
• Set the WM97+ boiler control for the desired
operation of the CWH.
• Perform all start-up tests to verify proper
operation of boiler and water heater.
Companion Water Heater
(CWH)
Installation summary
Follow the boiler manual, this manual, and all
applicable codes. Installation consists of the
following:
• Position the CWH under the boiler and check
fit of the piping access cover. Orient with
DHW connections on either side by rotating
the water heater 180°.
• Mount the CWH circulator, street tee, bush-
ing and drain valve.
• Connect the flexible lines from the circulator
and CWH boiler connections to the boiler
domestic water connections on the bottom
of the boiler.
• Mount the mixing valve assembly supplied
with the CWH, following the mixing valve
instructions provided with the valve kit.
• Install and pipe the T&P relief valve in the
CWH.
• Connect from the mixing valve and cold
water tee to the domestic water system.
• Connect the plug-in wire harnesses from the
CWH to the harnesses in the boiler.
• Set the mixing valve and instruct the owner
in operation of the CWH and boiler.
(CWH)
3